81492561 (number)

81492561 is an odd 8-digits composite number following 81492560 and preceding 81492562. In scientific notation, it is written as 8.1492561 × 10^7. The sum of its digits is 36. It has a total of 4 prime factors and 16 positive divisors. There are 54201528 positive integers (up to 81492561) that are relatively prime to 81492561.

Interesting facts

Basic properties

Name

Name eighty-one million four hundred ninety-two thousand five hundred sixty-one

Notation

Scientific notation 8.1492561 × 10^7
Engineering notation 8.1492561 × 10^6

Prime Factorization of 81492561

Prime Factorization 27 × 3 × 563 × 1787

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 81492561
Product of the distinct prime numbers

The prime factorization of 81492561 is 27 × 3 × 563 × 1787. Since it has a total of 4 prime factors.

Most popular turbo-numbers

10, 7, 68, 52, 276, 156, 8513, 749, 45358, 55558, 424471, 194224, 8884209, 8849456, 42059903, 50960508, 691148400, 566872235, 3033671482, 8527031395

Basic calculations (n = 81492561)

Multiplication

n×y
n×2 162985122
n×3 244477683
n×4 325970244
n×5 407462805

Division

n÷y
n÷2 40746280.5
n÷3 27164187
n÷3 20373140.25
n÷5 16298512.2

Exponentiation

ny
n2 6641037498338721
n3 5.4119515343666E+23
n4 4.4103379054341E+31
n5 3.594097307892E+39

Nth Root

y√n
2√n 9027.3230251277
3√n 433.55013129371
4√n 95.012225661373
5√n 38.214096260309

Divisors of 81492561

1, 3, 27, 81, 563, 1689, 1787, 5361, 15201, 45603, 48249, 144747, 1006081, 3018243, 27164187, 81492561

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 -81492560
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 81492561 can be divided by 16 positive divisors. The sum of these divisors (counting 81492561) is 1, the average is 0.0625.

Base conversion 81492561

Base System Value
2 Binary 100110110110111101001010001
3 Ternary 12200100020210000
4 Quaternary 10312313221101
5 Quinary 131330230221
6 Senary 12030400213
8 Octal 466675121
10 Decimal 81492561
12 Duodecimal 23360069
16 Hexadecimal 4db7a51
20 Vigesimal 1596b81
36 Base36 1cio29

Cryptographic Hash Functions

md5 1854b6f786e92f8fbc555c185abcb306
sha1 7899b4c3e77952586ba446188d4598bb533f39b5
sha256 a7de1b54c8238edcc6057c265c4d4d4e9295b42910884fd8938183c2238b07c1
sha512 8cd30921d020d17f50d863a909d0dcf53f7fcc91d3a31a36150dcb63ec7f03a869219bc005593f21010f68849da17a9d5b8d84cb57d3cab6e26e042e7094ff21
ripemd-160 c3c4f59178103a6f361f5a2e080cf533bc56c762

81492561 as geometric shapes

Circle

Radius = n
Diameter 162985122
Circumference 512032861.91964
Area 2.0863434616995E+16

Sphere

Radius = n
Volume 2.2669529575933E+24
Surface area 8.3453738467981E+16
Circumference 512032861.91964

Square

Length = n
Perimeter 325970244
Area 6641037498338721
Diagonal 115247884.99872

Cube

Length = n
Surface area 39846224990032326
Volume 5.4119515343666E+23
Space diagonal 141149256.09091

Equilateral Triangle

Length = n
Perimeter 244477683
Area 2.8756535905232E+15
Altitude 70574628.045453

Triangular Pyramid

Length = n
Surface area 2.8756535905232E+15
Volume 6.3780460490059E+22
Height 38415961.666239