81551155 (number)

81551155 is an odd 8-digits composite number following 81551154 and preceding 81551156. In scientific notation, it is written as 8.1551155 × 10^7. The sum of its digits is 31. It has a total of 4 prime factors and 16 positive divisors. There are 55692000 positive integers (up to 81551155) that are relatively prime to 81551155.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 8.1551155 × 10^7
Engineering notation 8.1551155 × 10^6

Prime Factorization of 81551155

Prime Factorization 5 × 7 × 251 × 9283

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 81551155
Product of the distinct prime numbers

The prime factorization of 81551155 is 5 × 7 × 251 × 9283. Since it has a total of 4 prime factors.

Most popular turbo-numbers

4, 6, 21, 98, 294, 718, 4797, 119, 56570, 79204, 133728, 362034, 3506394, 4773633, 37846656, 68649572, 283792236, 878919596, 248577821, 437641111

Basic calculations (n = 81551155)

Multiplication

n×y
n×2 163102310
n×3 244653465
n×4 326204620
n×5 407755775

Division

n÷y
n÷2 40775577.5
n÷3 27183718.333333
n÷3 20387788.75
n÷5 16310231

Exponentiation

ny
n2 6650590881834025
n3 5.4236336784603E+23
n4 4.4230359077534E+31
n5 3.6070368688376E+39

Nth Root

y√n
2√n 9030.5678116052
3√n 433.65401541952
4√n 95.029299753314
5√n 38.219589947162

Divisors of 81551155

1, 5, 7, 35, 251, 1255, 1757, 8785, 9283, 46415, 64981, 324905, 2330033, 11650165, 16310231, 81551155

16 divisors

τ Total Divisors 16
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -81551154
Sum of the proper positive divisors of n
A Arithmetic Mean 0.0625
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 16
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81551155 can be divided by 16 positive divisors. The sum of these divisors (counting 81551155) is 1, the average is 0.0625.

Base conversion 81551155

Base System Value
2 Binary 100110111000101111100110011
3 Ternary 12200110020011011
4 Quaternary 10313011330303
5 Quinary 131334114110
6 Senary 12031531351
8 Octal 467057463
10 Decimal 81551155
12 Duodecimal 23389b57
16 Hexadecimal 4dc5f33
20 Vigesimal 159dhhf
36 Base36 1cjx9v

Cryptographic Hash Functions

md5 99cb2e0527e8a9085428fd66dde2ef2c
sha1 f076b5e8bbc984f88b0e5aeb96e4edd7c2cdaf4a
sha256 981b3c134fe3cce4ea0c2c0724867d3eeb3231a920748a51236809e5d7aecbe3
sha512 0b40e7a7886b00dd748f90cabf6537727f8d397d08a1cd672c2008b80641b0b9079a73240f330978c323de55181ec7a4012d832365ef58131c87535399c7bf78
ripemd-160 347941dda3f6aa9d70a61759f4fc15550cf8245d

81551155 as geometric shapes

Circle

Radius = n
Diameter 163102310
Circumference 512401018.87953
Area 2.0893447456401E+16

Sphere

Radius = n
Volume 2.2718463626684E+24
Surface area 8.3573789825604E+16
Circumference 512401018.87953

Square

Length = n
Perimeter 326204620
Area 6650590881834025
Diagonal 115330749.42819

Cube

Length = n
Surface area 39903545291004150
Volume 5.4236336784603E+23
Space diagonal 141250743.87592

Equilateral Triangle

Length = n
Perimeter 244653465
Area 2.8797903269227E+15
Altitude 70625371.937962

Triangular Pyramid

Length = n
Surface area 2.8797903269227E+15
Volume 6.3918135878517E+22
Height 38443583.14273