81121566 (number)

81121566 is an even 8-digits composite number following 81121565 and preceding 81121567. In scientific notation, it is written as 8.1121566 × 10^7. The sum of its digits is 30. It has a total of 4 prime factors and 16 positive divisors. There are 27019800 positive integers (up to 81121566) that are relatively prime to 81121566.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 8.1121566 × 10^7
Engineering notation 8.1121566 × 10^6

Prime Factorization of 81121566

Prime Factorization 2 × 3 × 1531 × 8831

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 81121566
Product of the distinct prime numbers

The prime factorization of 81121566 is 2 × 3 × 1531 × 8831. Since it has a total of 4 prime factors.

Most popular turbo-numbers

2, 2, 54, 46, 426, 356, 2392, 2143, 812, 80486, 696692, 551817, 4459865, 4071983, 40399712, 49502251, 936247294, 381891016, 518697350, 8437882047

Basic calculations (n = 81121566)

Multiplication

n×y
n×2 162243132
n×3 243364698
n×4 324486264
n×5 405607830

Division

n÷y
n÷2 40560783
n÷3 27040522
n÷3 20280391.5
n÷5 16224313.2

Exponentiation

ny
n2 6580708470292356
n3 5.3383737649958E+23
n4 4.3305723970978E+31
n5 3.5130281452894E+39

Nth Root

y√n
2√n 9006.7511345657
3√n 432.89121784833
4√n 94.903904738244
5√n 38.179238781365

Divisors of 81121566

1, 2, 3, 6, 1531, 3062, 4593, 8831, 9186, 17662, 26493, 52986, 13520261, 27040522, 40560783, 81121566

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 -81121565
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 81121566 can be divided by 16 positive divisors. The sum of these divisors (counting 81121566) is 1, the average is 0.0625.

Base conversion 81121566

Base System Value
2 Binary 100110101011101000100011110
3 Ternary 12122122101212110
4 Quaternary 10311131010132
5 Quinary 131231342231
6 Senary 12014414450
8 Octal 465350436
10 Decimal 81121566
12 Duodecimal 23201426
16 Hexadecimal 4d5d11e
20 Vigesimal 15703i6
36 Base36 1capsu

Cryptographic Hash Functions

md5 7dd341d3cbbbcf327c87bcc8f4a02950
sha1 ab3f8ffae2e4438708303326bc669012335db4d6
sha256 5bff7c5d514f9513c3df1058f46675997255ae7c075cad4f2b0bd8e6574a813a
sha512 1372cd13192768e68edcb76ea3ea960a0b6f9a9276bda1f8c79bc993f3ff95e7662154b8015ca68e7b4ec5ae4b59055f0b85ca2aabc3c4521957ece03bd0a96f
ripemd-160 67b41662336eecc3d79d8a539780a0d74d73a899

81121566 as geometric shapes

Circle

Radius = n
Diameter 162243132
Circumference 509701831.5866
Area 2.0673905385687E+16

Sphere

Radius = n
Volume 2.2361327736303E+24
Surface area 8.2695621542746E+16
Circumference 509701831.5866

Square

Length = n
Perimeter 324486264
Area 6580708470292356
Diagonal 114723218.83814

Cube

Length = n
Surface area 39484250821754136
Volume 5.3383737649958E+23
Space diagonal 140506673.90155

Equilateral Triangle

Length = n
Perimeter 243364698
Area 2.8495303550863E+15
Altitude 70253336.950776

Triangular Pyramid

Length = n
Surface area 2.8495303550863E+15
Volume 6.2913338162282E+22
Height 38241072.946048