81557025 (number)

81557025 is an odd 8-digits composite number following 81557024 and preceding 81557026. In scientific notation, it is written as 8.1557025 × 10^7. The sum of its digits is 33. It has a total of 6 prime factors and 32 positive divisors. There are 36590400 positive integers (up to 81557025) that are relatively prime to 81557025.

Interesting facts

Basic properties

Name

Name eighty-one million five hundred fifty-seven thousand twenty-five

Notation

Scientific notation 8.1557025 × 10^7
Engineering notation 8.1557025 × 10^6

Prime Factorization of 81557025

Prime Factorization 75 × 11 × 11 × 11 × 19 × 43

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 6
Total number of prime factors
rad Radical 674025
Product of the distinct prime numbers

The prime factorization of 81557025 is 75 × 11 × 11 × 11 × 19 × 43. Since it has a total of 6 prime factors.

Most popular turbo-numbers

2, 10, 93, 59, 105, 897, 9627, 9474, 62912, 38063, 95066, 71145, 1052870, 7886492, 34439588, 49362740, 779714384, 824646094, 5874602718, 4232226811

Basic calculations (n = 81557025)

Multiplication

n×y
n×2 163114050
n×3 244671075
n×4 326228100
n×5 407785125

Division

n÷y
n÷2 40778512.5
n÷3 27185675
n÷3 20389256.25
n÷5 16311405

Exponentiation

ny
n2 6651548326850625
n3 5.4248049318166E+23
n4 4.4243095144429E+31
n5 3.6083352167716E+39

Nth Root

y√n
2√n 9030.8928130058
3√n 433.66441988282
4√n 95.031009744219
5√n 38.220140135651

Divisors of 81557025

1, 11, 19, 43, 75, 121, 209, 473, 817, 825, 1331, 1425, 2299, 3225, 5203, 8987, 9075, 15675, 25289, 35475, 57233, 61275, 98857, 99825, 172425, 390225, 674025, 1087427, 1896675, 4292475, 7414275, 81557025

32 divisors

τ Total Divisors 32
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -81557024
Sum of the proper positive divisors of n
A Arithmetic Mean 0.03125
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 32
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81557025 can be divided by 32 positive divisors. The sum of these divisors (counting 81557025) is 1, the average is 0.03125.

Base conversion 81557025

Base System Value
2 Binary 100110111000111011000100001
3 Ternary 12200110112012120
4 Quaternary 10313013120201
5 Quinary 131334311100
6 Senary 12032014453
8 Octal 467073041
10 Decimal 81557025
12 Duodecimal 23391429
16 Hexadecimal 4dc7621
20 Vigesimal 159ecb5
36 Base36 1ck1sx

Cryptographic Hash Functions

md5 95e68fbc07deb186515db593dddab51c
sha1 497582d68a017564a2ba5c26cb1c494c56e38af9
sha256 4514895d2df41ab2265955a839caa35271835c752918be89426c262eaba45f99
sha512 c739f5c77790e0b2ec7f74de4da84215fba6e257edd23823091de55db53cf36700ae878849d83a08757b65947841efc5801f069bffc019cc2292458ca75765e9
ripemd-160 81a296d95f0c30e124caacc9ea84989ada9a1f30

81557025 as geometric shapes

Circle

Radius = n
Diameter 163114050
Circumference 512437901.17728
Area 2.0896455358631E+16

Sphere

Radius = n
Volume 2.272336976127E+24
Surface area 8.3585821434526E+16
Circumference 512437901.17728

Square

Length = n
Perimeter 326228100
Area 6651548326850625
Diagonal 115339050.8618

Cube

Length = n
Surface area 39909289961103750
Volume 5.4248049318166E+23
Space diagonal 141260911.01417

Equilateral Triangle

Length = n
Perimeter 244671075
Area 2.8802049127763E+15
Altitude 70630455.507083

Triangular Pyramid

Length = n
Surface area 2.8802049127763E+15
Volume 6.3931939231696E+22
Height 38446350.287267