81121011 (number)

81121011 is an odd 8-digits composite number following 81121010 and preceding 81121012. In scientific notation, it is written as 8.1121011 × 10^7. The sum of its digits is 15. It has a total of 2 prime factors and 4 positive divisors. There are 54080672 positive integers (up to 81121011) that are relatively prime to 81121011.

Interesting facts

Basic properties

Name

Name eighty-one million one hundred twenty-one thousand eleven

Notation

Scientific notation 8.1121011 × 10^7
Engineering notation 8.1121011 × 10^6

Prime Factorization of 81121011

Prime Factorization 3 × 27040337

Composite number
ω Distinct Factors 2
Total number of distinct prime factors
Ω Total Factors 2
Total number of prime factors
rad Radical 81121011
Product of the distinct prime numbers

The prime factorization of 81121011 is 3 × 27040337. Since it has a total of 2 prime factors.

Most popular turbo-numbers

Basic calculations (n = 81121011)

Multiplication

n×y
n×2 162242022
n×3 243363033
n×4 324484044
n×5 405605055

Division

n÷y
n÷2 40560505.5
n÷3 27040337
n÷3 20280252.75
n÷5 16224202.2

Exponentiation

ny
n2 6580618425662121
n3 5.3382641969494E+23
n4 4.3304538864164E+31
n5 3.5129079735498E+39

Nth Root

y√n
2√n 9006.7203242912
3√n 432.89023062555
4√n 94.903742414571
5√n 38.179186539929

Divisors of 81121011

4 divisors

τ Total Divisors 4
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -81121010
Sum of the proper positive divisors of n
A Arithmetic Mean 0.25
Returns the sum of divisors (σ(n)) divided by the total number of divisors (τ(n))
G Geometric Mean 1
Returns the nth root of the product of n divisors
H Harmonic Mean 4
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81121011 can be divided by 4 positive divisors. The sum of these divisors (counting 81121011) is 1, the average is 0.25.

Base conversion 81121011

Base System Value
2 Binary 100110101011100111011110011
3 Ternary 12122122101002220
4 Quaternary 10311130323303
5 Quinary 131231333021
6 Senary 12014412123
8 Octal 465347363
10 Decimal 81121011
12 Duodecimal 23201043
16 Hexadecimal 4d5cef3
20 Vigesimal 15702ab
36 Base36 1capdf

Cryptographic Hash Functions

md5 8bb343015f6475b112e4964b686b4692
sha1 477f2012e49879c76129eaece31c479a5882df76
sha256 1596e859886101f3b4d57145747e4e51576b7a67455d04b4898d59a65399c222
sha512 230ce48e19cd7cb67a58bf75bbf4873c3b78e4026ed72868cc44c8c366ac65fd24ad0f761330c8a9ebfee5393b5f9993455361f9f579cc248a960ef7b37e9c38
ripemd-160 58fff00f4e7a88ceb55cac0f541090eb13d7f930

81121011 as geometric shapes

Circle

Radius = n
Diameter 162242022
Circumference 509698344.41875
Area 2.0673622502138E+16

Sphere

Radius = n
Volume 2.2360868778744E+24
Surface area 8.2694490008551E+16
Circumference 509698344.41875

Square

Length = n
Perimeter 324484044
Area 6580618425662121
Diagonal 114722433.94962

Cube

Length = n
Surface area 39483710553972726
Volume 5.3382641969494E+23
Space diagonal 140505712.61335

Equilateral Triangle

Length = n
Perimeter 243363033
Area 2.8494913646177E+15
Altitude 70252856.306677

Triangular Pyramid

Length = n
Surface area 2.8494913646177E+15
Volume 6.2912046890471E+22
Height 38240811.316539