81252085 (number)

81252085 is an odd 8-digits composite number following 81252084 and preceding 81252086. In scientific notation, it is written as 8.1252085 × 10^7. The sum of its digits is 31. It has a total of 4 prime factors and 16 positive divisors. There are 62334720 positive integers (up to 81252085) that are relatively prime to 81252085.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 8.1252085 × 10^7
Engineering notation 8.1252085 × 10^6

Prime Factorization of 81252085

Prime Factorization 5 × 31 × 113 × 4639

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 81252085
Product of the distinct prime numbers

The prime factorization of 81252085 is 5 × 31 × 113 × 4639. Since it has a total of 4 prime factors.

Most popular turbo-numbers

3, 7, 89, 7, 588, 975, 9981, 8297, 55201, 34987, 808584, 40801, 1631946, 1805078, 11393733, 47191276, 361724965, 924307232, 4736004006, 1102823442

Basic calculations (n = 81252085)

Multiplication

n×y
n×2 162504170
n×3 243756255
n×4 325008340
n×5 406260425

Division

n÷y
n÷2 40626042.5
n÷3 27084028.333333
n÷3 20313021.25
n÷5 16250417

Exponentiation

ny
n2 6601901316847225
n3 5.3641824695808E+23
n4 4.3585100997389E+31
n5 3.5413803309734E+39

Nth Root

y√n
2√n 9013.9938429089
3√n 433.12325747678
4√n 94.942055185829
5√n 38.191516434297

Divisors of 81252085

1, 5, 31, 113, 155, 565, 3503, 4639, 17515, 23195, 143809, 524207, 719045, 2621035, 16250417, 81252085

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 -81252084
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 81252085 can be divided by 16 positive divisors. The sum of these divisors (counting 81252085) is 1, the average is 0.0625.

Base conversion 81252085

Base System Value
2 Binary 100110101111100111011110101
3 Ternary 12122220000220111
4 Quaternary 10311330323311
5 Quinary 131300031320
6 Senary 12021303021
8 Octal 465747365
10 Decimal 81252085
12 Duodecimal 23264a71
16 Hexadecimal 4d7cef5
20 Vigesimal 157ga45
36 Base36 1cdiid

Cryptographic Hash Functions

md5 f57c2e35630dfed8046a0d30a046dda6
sha1 8a81c7c83e99d03ff3419ff7730bbcc7281175c0
sha256 31ceca843857576fe5f6763e448d9af05cc619ecc30634331bc8949522129798
sha512 06d8df95ed4c0390754539296ffc0d723a94acdf481342824be6863e3f6b16f3a491e2310c54b9f9482248da63f975b9973d49200fd2c37388fc51dfba9a01f2
ripemd-160 c6459fc0a94a425e01c32531b73c1a6299828e81

81252085 as geometric shapes

Circle

Radius = n
Diameter 162504170
Circumference 510521906.64971
Area 2.0740484676732E+16

Sphere

Radius = n
Volume 2.2469434985267E+24
Surface area 8.2961938706928E+16
Circumference 510521906.64971

Square

Length = n
Perimeter 325008340
Area 6601901316847225
Diagonal 114907800.57809

Cube

Length = n
Surface area 39611407901083350
Volume 5.3641824695808E+23
Space diagonal 140732739.44091

Equilateral Triangle

Length = n
Perimeter 243756255
Area 2.8587071268338E+15
Altitude 70366369.720453

Triangular Pyramid

Length = n
Surface area 2.8587071268338E+15
Volume 6.321749666271E+22
Height 38302600.192697