91081 (number)
91,081 (ninetyone thousand eightyone) is an odd fivedigits prime number following 91080 and preceding 91082. In scientific notation, it is written as 9.1081 × 10^{4}. The sum of its digits is 19. It has a total of 1 prime factor and 2 positive divisors. There are 91,080 positive integers (up to 91081) that are relatively prime to 91081.
Basic properties
 Is Prime? Yes
 Number parity Odd
 Number length 5
 Sum of Digits 19
 Digital Root 1
Name
Short name  91 thousand 81 

Full name  ninetyone thousand eightyone 
Notation
Scientific notation  9.1081 × 10^{4} 

Engineering notation  91.081 × 10^{3} 
Prime Factorization of 91081
Prime Factorization 91081
Prime numberω(n)  Distinct Factors  1  Total number of distinct prime factors 

Ω(n)  Total Factors  1  Total number of prime factors 
rad(n)  Radical  91081  Product of the distinct prime numbers 
λ(n)  Liouville Lambda  1  Returns the parity of Ω(n), such that λ(n) = (1)^{Ω(n)} 
μ(n)  Mobius Mu  1  Returns:

Λ(n)  Mangoldt function  11.419504499476  Returns log(p) if n is a power p^{k} of any prime p (for any k >= 1), else returns 0 
The prime factorization of 91,081 is 91081. Since it has a total of 1 prime factor, 91,081 is a prime number.
Divisors of 91081
2 divisors
τ(n)  Total Divisors  2  Total number of the positive divisors of n 

σ(n)  Sum of Divisors  91082  Sum of all the positive divisors of n 
s(n)  Aliquot Sum  1  Sum of the proper positive divisors of n 
A(n)  Arithmetic Mean  45541  Returns the sum of divisors (σ(n)) divided by the total number of divisors (τ(n)) 
G(n)  Geometric Mean  301.79628891025  Returns the nth root of the product of n divisors 
H(n)  Harmonic Mean  1.9999780417646  Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors 
The number 91,081 can be divided by 2 positive divisors (out of which 0 are even, and 2 are odd). The sum of these divisors (counting 91,081) is 91,082, the average is 45,541.
Other Arithmetic Functions (n = 91081)
φ(n)  Euler Totient  91080  Total number of positive integers not greater than n that are coprime to n 

λ(n)  Carmichael Lambda  91080  Smallest positive number such that a^{λ(n)} ≡ 1 (mod n) for all a coprime to n 
π(n)  Prime Pi  ≈ 8805  Total number of primes less than or equal to n 
r_{2}(n)  Sum of 2 squares  8  The number of ways n can be represented as the sum of 2 squares 
There are 91,080 positive integers (less than 91,081) that are coprime with 91,081. And there are approximately 8,805 prime numbers less than or equal to 91,081.
Divisibility of 91081
m  2  3  4  5  6  7  8  9 

n mod m  1  1  1  1  1  4  1  1 
91,081 is not divisible by any number less than or equal to 9.
Classification of 91081
By Arithmetic functions
 Arithmetic
 Prime
 Deficient
Expressible via specific sums
 Polite
By Powers
 Prime Power
 Square Free
Base conversion (91081)
Base  System  Value 

2  Binary  10110001111001001 
3  Ternary  11121221101 
4  Quaternary  112033021 
5  Quinary  10403311 
6  Senary  1541401 
8  Octal  261711 
10  Decimal  91081 
12  Duodecimal  44861 
16  Hexadecimal  163c9 
20  Vigesimal  b7e1 
36  Base36  1ya1 
Basic calculations (n = 91081)
Multiplication
n×yn×2  182162 

n×3  273243 
n×4  364324 
n×5  455405 
Division
n÷yn÷2  45540.500 

n÷3  30360.333 
n÷4  22770.250 
n÷5  18216.200 
Exponentiation
n^{y}n^{2}  8295748561 

n^{3}  755585074684441 
n^{4}  68819444187333570721 
n^{5}  6268143796026528954839401 
Nth Root
^{y}√n^{2}√n  301.79628891025 

^{3}√n  44.992756035597 
^{4}√n  17.372285080272 
^{5}√n  9.8148927439034 
91081 as geometric shapes
Circle
Radius = nDiameter  182162 

Circumference  572278.80096322 
Area  26061862735.266 
Sphere
Radius = nVolume  3.164987359721E+15 

Surface area  104247450941.06 
Circumference  572278.80096322 
Square
Length = nPerimeter  364324 

Area  8295748561 
Diagonal  128807.9854745 
Cube
Length = nSurface area  49774491366 

Volume  755585074684441 
Space diagonal  157756.91960418 
Equilateral Triangle
Length = nPerimeter  273243 

Area  3592164498.6171 
Altitude  78878.45980209 
Triangular Pyramid
Length = nSurface area  14368657994.468 

Volume  89046555012119 
Height  74367.325087478 
Cryptographic Hash Functions
md5  3ad7e836e8b903aaae35974355a5f35e 

sha1  979de54880066c34b383eea0daa1d7c6d712ed55 
sha256  284116382e6e8f9f69f8cb49dbdda656acb22b648ab61d5841c9321f1873d813 
sha512  6e2e26dbc013add958d53ece6dcf6b404968b12de1f76fdb09bb99976aa8c85e6997f0afcde601a99334cacc2aae6be5fb2ede986251675ba02e0f97091bf8f2 
ripemd160  1dda10da3aed0dff3baf2145416b115fe753b4d3 