81551169 (number)

81551169 is an odd 8-digits composite number following 81551168 and preceding 81551170. In scientific notation, it is written as 8.1551169 × 10^7. The sum of its digits is 36. It has a total of 5 prime factors and 24 positive divisors. There are 44556336 positive integers (up to 81551169) that are relatively prime to 81551169.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 8.1551169 × 10^7
Engineering notation 8.1551169 × 10^6

Prime Factorization of 81551169

Prime Factorization 7 × 9 × 23 × 23 × 2447

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 5
Total number of prime factors
rad Radical 3545703
Product of the distinct prime numbers

The prime factorization of 81551169 is 7 × 9 × 23 × 23 × 2447. Since it has a total of 5 prime factors.

Most popular turbo-numbers

Basic calculations (n = 81551169)

Multiplication

n×y
n×2 163102338
n×3 244653507
n×4 326204676
n×5 407755845

Division

n÷y
n÷2 40775584.5
n÷3 27183723
n÷3 20387792.25
n÷5 16310233.8

Exponentiation

ny
n2 6650593165266561
n3 5.423636471709E+23
n4 4.423038944989E+31
n5 3.6070399649638E+39

Nth Root

y√n
2√n 9030.5685867502
3√n 433.65404023485
4√n 95.029303831767
5√n 38.219591259404

Divisors of 81551169

24 divisors

τ Total Divisors 24
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -81551168
Sum of the proper positive divisors of n
A Arithmetic Mean 0.041666666666667
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 24
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81551169 can be divided by 24 positive divisors. The sum of these divisors (counting 81551169) is 1, the average is 0.041666666666667.

Base conversion 81551169

Base System Value
2 Binary 100110111000101111101000001
3 Ternary 12200110020011200
4 Quaternary 10313011331001
5 Quinary 131334114134
6 Senary 12031531413
8 Octal 467057501
10 Decimal 81551169
12 Duodecimal 23389b69
16 Hexadecimal 4dc5f41
20 Vigesimal 159dhi9
36 Base36 1cjxa9

Cryptographic Hash Functions

md5 b379e243a7f975a26240bd815c545a38
sha1 bab0b44d944071aed55dcf0be57fc5ce7cde5b23
sha256 47e54b204c8eaff5870a2c23e17dc5ef64a73db4e51d3f061ceda8fc2ccb7145
sha512 61568b8e73321514a307e1f56e801c969e05ad9e20d551e04409f809d495525066a906ed8056f84e37f4addd85b80a79eb638775fdc0234b7fb6b29077334c37
ripemd-160 ef5c1f0c2a76e2e164c60f9a59d6bb9a35da5b54

81551169 as geometric shapes

Circle

Radius = n
Diameter 163102338
Circumference 512401106.84412
Area 2.0893454630016E+16

Sphere

Radius = n
Volume 2.2718475327017E+24
Surface area 8.3573818520064E+16
Circumference 512401106.84412

Square

Length = n
Perimeter 326204676
Area 6650593165266561
Diagonal 115330769.22718

Cube

Length = n
Surface area 39903558991599366
Volume 5.423636471709E+23
Space diagonal 141250768.12464

Equilateral Triangle

Length = n
Perimeter 244653507
Area 2.879791315678E+15
Altitude 70625384.062318

Triangular Pyramid

Length = n
Surface area 2.879791315678E+15
Volume 6.3918168797268E+22
Height 38443589.742393