81551145 (number)

81551145 is an odd 8-digits composite number following 81551144 and preceding 81551146. In scientific notation, it is written as 8.1551145 × 10^7. The sum of its digits is 30. It has a total of 5 prime factors and 32 positive divisors. There are 38320128 positive integers (up to 81551145) that are relatively prime to 81551145.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 8.1551145 × 10^7
Engineering notation 8.1551145 × 10^6

Prime Factorization of 81551145

Prime Factorization 15 × 13 × 37 × 127 × 89

Composite number
ω Distinct Factors 5
Total number of distinct prime factors
Ω Total Factors 5
Total number of prime factors
rad Radical 81551145
Product of the distinct prime numbers

The prime factorization of 81551145 is 15 × 13 × 37 × 127 × 89. Since it has a total of 5 prime factors.

Most popular turbo-numbers

2, 3, 77, 21, 867, 869, 2404, 9115, 22044, 45164, 287446, 602530, 5715826, 7986858, 60125467, 49470747, 72679619, 685223807, 4547493665, 8285918937

Basic calculations (n = 81551145)

Multiplication

n×y
n×2 163102290
n×3 244653435
n×4 326204580
n×5 407755725

Division

n÷y
n÷2 40775572.5
n÷3 27183715
n÷3 20387786.25
n÷5 16310229

Exponentiation

ny
n2 6650589250811025
n3 5.4236316832833E+23
n4 4.4230337383003E+31
n5 3.6070346573202E+39

Nth Root

y√n
2√n 9030.5672579301
3√n 433.65399769428
4√n 95.029296840133
5√n 38.219589009846

Divisors of 81551145

1, 13, 15, 37, 89, 127, 195, 481, 555, 1157, 1335, 1651, 1905, 3293, 4699, 7215, 11303, 17355, 24765, 42809, 49395, 61087, 70485, 146939, 169545, 418211, 642135, 916305, 2204085, 5436743, 6273165, 81551145

32 divisors

τ Total Divisors 32
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -81551144
Sum of the proper positive divisors of n
A Arithmetic Mean 0.03125
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 32
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81551145 can be divided by 32 positive divisors. The sum of these divisors (counting 81551145) is 1, the average is 0.03125.

Base conversion 81551145

Base System Value
2 Binary 100110111000101111100101001
3 Ternary 12200110020010210
4 Quaternary 10313011330221
5 Quinary 131334114040
6 Senary 12031531333
8 Octal 467057451
10 Decimal 81551145
12 Duodecimal 23389b49
16 Hexadecimal 4dc5f29
20 Vigesimal 159dhh5
36 Base36 1cjx9l

Cryptographic Hash Functions

md5 cdef039d152585b0709eb8d90dac0b4a
sha1 c3a3302f3e54ba22945113afbcda94df50b4e644
sha256 ff6d0d7395bbc6872a77a205133bff70b3b1c64c609fc3ac30824d2d6e7b2b6b
sha512 cc0d8f38ef3225881209205db9805d127305c256808fde1e12f6533df5b2b9b18f6270d95874808060c0d099678531b683f9c840bf67f4c8524b1bf4b5e39817
ripemd-160 46396071c0cd006d3199cc2b124f4a6ba1bca075

81551145 as geometric shapes

Circle

Radius = n
Diameter 163102290
Circumference 512400956.04767
Area 2.0893442332391E+16

Sphere

Radius = n
Volume 2.2718455269306E+24
Surface area 8.3573769329565E+16
Circumference 512400956.04767

Square

Length = n
Perimeter 326204580
Area 6650589250811025
Diagonal 115330735.28605

Cube

Length = n
Surface area 39903535504866150
Volume 5.4236316832833E+23
Space diagonal 141250726.55542

Equilateral Triangle

Length = n
Perimeter 244653435
Area 2.879789620669E+15
Altitude 70625363.277708

Triangular Pyramid

Length = n
Surface area 2.879789620669E+15
Volume 6.3918112365131E+22
Height 38443578.428685