81661522 (number)

81661522 is an even 8-digits composite number following 81661521 and preceding 81661523. In scientific notation, it is written as 8.1661522 × 10^7. The sum of its digits is 31. It has a total of 2 prime factors and 4 positive divisors. There are 40830760 positive integers (up to 81661522) that are relatively prime to 81661522.

Interesting facts

Basic properties

Name

Name eighty-one million six hundred sixty-one thousand five hundred twenty-two

Notation

Scientific notation 8.1661522 × 10^7
Engineering notation 8.1661522 × 10^6

Prime Factorization of 81661522

Prime Factorization 2 × 40830761

Composite number
ω Distinct Factors 2
Total number of distinct prime factors
Ω Total Factors 2
Total number of prime factors
rad Radical 81661522
Product of the distinct prime numbers

The prime factorization of 81661522 is 2 × 40830761. Since it has a total of 2 prime factors.

Most popular turbo-numbers

5, 6, 58, 66, 81, 180, 7425, 5880, 13277, 82966, 462630, 807492, 4086201, 9067000, 52636896, 42568617, 415225468, 955649025, 1634119340, 3696206017

Basic calculations (n = 81661522)

Multiplication

n×y
n×2 163323044
n×3 244984566
n×4 326646088
n×5 408307610

Division

n÷y
n÷2 40830761
n÷3 27220507.333333
n÷3 20415380.5
n÷5 16332304.4

Exponentiation

ny
n2 6668604175356484
n3 5.4456836657517E+23
n4 4.4470281647582E+31
n5 3.6315108831102E+39

Nth Root

y√n
2√n 9036.6764908344
3√n 433.84955533575
4√n 95.061435350169
5√n 38.229929224076

Divisors of 81661522

1, 2, 40830761, 81661522

4 divisors

τ Total Divisors 4
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -81661521
Sum of the proper positive divisors of n
A Arithmetic Mean 0.25
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 4
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81661522 can be divided by 4 positive divisors. The sum of these divisors (counting 81661522) is 1, the average is 0.25.

Base conversion 81661522

Base System Value
2 Binary 100110111100000111001010010
3 Ternary 12200122211112211
4 Quaternary 10313200321102
5 Quinary 131401132042
6 Senary 12034142334
8 Octal 467407122
10 Decimal 81661522
12 Duodecimal 234219aa
16 Hexadecimal 4de0e52
20 Vigesimal 15a7dg2
36 Base36 1cmafm

Cryptographic Hash Functions

md5 201c4d6b724477dd0b0fc4c41eb5a6d4
sha1 919c6a56bcd24e4f8b48ebb9c5d16c0b0a6edfcc
sha256 7ec2952bdb668d2bb3b388f0254bafbb5df59f235674ee696e02d254b26bea3e
sha512 c184f0cc04d9b372bdd9831cc79cc4459bbec836b814fde77128681d8abff490728ce437ad0d483168fcb4570dc4e83ceb4c5e35b343eebba7145577df93b0cb
ripemd-160 5c23d62ff709a4e0c9a1388aa74f6e9628cf8423

81661522 as geometric shapes

Circle

Radius = n
Diameter 163323044
Circumference 513094475.19232
Area 2.0950037886998E+16

Sphere

Radius = n
Volume 2.2810826397466E+24
Surface area 8.3800151547993E+16
Circumference 513094475.19232

Square

Length = n
Perimeter 326646088
Area 6668604175356484
Diagonal 115486831.93643

Cube

Length = n
Surface area 40011625052138904
Volume 5.4456836657517E+23
Space diagonal 141441905.1274

Equilateral Triangle

Length = n
Perimeter 244984566
Area 2.8875903118208E+15
Altitude 70720952.563702

Triangular Pyramid

Length = n
Surface area 2.8875903118208E+15
Volume 6.417799747083E+22
Height 38495610.645476