81121544 (number)

81121544 is an even 8-digits composite number following 81121543 and preceding 81121545. In scientific notation, it is written as 8.1121544 × 10^7. The sum of its digits is 26. It has a total of 7 prime factors and 64 positive divisors. There are 33180480 positive integers (up to 81121544) that are relatively prime to 81121544.

Interesting facts

Basic properties

Name

Name eighty-one million one hundred twenty-one thousand five hundred forty-four

Notation

Scientific notation 8.1121544 × 10^7
Engineering notation 8.1121544 × 10^6

Prime Factorization of 81121544

Prime Factorization 2 × 2 × 2 × 31 × 7 × 83 × 563

Composite number
ω Distinct Factors 5
Total number of distinct prime factors
Ω Total Factors 7
Total number of prime factors
rad Radical 20280386
Product of the distinct prime numbers

The prime factorization of 81121544 is 2 × 2 × 2 × 31 × 7 × 83 × 563. Since it has a total of 7 prime factors.

Most popular turbo-numbers

1, 3, 57, 1, 198, 19, 5470, 2044, 37191, 45604, 382153, 285257, 2916187, 499720, 50803452, 11402127, 743793635, 894449181, 6344946081, 3882747629

Basic calculations (n = 81121544)

Multiplication

n×y
n×2 162243088
n×3 243364632
n×4 324486176
n×5 405607720

Division

n÷y
n÷2 40560772
n÷3 27040514.666667
n÷3 20280386
n÷5 16224308.8

Exponentiation

ny
n2 6580704900943936
n3 5.3383694217294E+23
n4 4.3305676993308E+31
n5 3.5130233816624E+39

Nth Root

y√n
2√n 9006.7499132595
3√n 432.89117871526
4√n 94.903898303808
5√n 38.179236710539

Divisors of 81121544

1, 2, 4, 7, 8, 14, 28, 31, 56, 62, 83, 124, 166, 217, 248, 332, 434, 563, 581, 664, 868, 1126, 1162, 1736, 2252, 2324, 2573, 3941, 4504, 4648, 5146, 7882, 10292, 15764, 17453, 18011, 20584, 31528, 34906, 36022, 46729, 69812, 72044, 93458, 122171, 139624, 144088, 186916, 244342, 327103, 373832, 488684, 654206, 977368, 1308412, 1448599, 2616824, 2897198, 5794396, 10140193, 11588792, 20280386, 40560772, 81121544

64 divisors

τ Total Divisors 64
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -81121543
Sum of the proper positive divisors of n
A Arithmetic Mean 0.015625
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 64
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81121544 can be divided by 64 positive divisors. The sum of these divisors (counting 81121544) is 1, the average is 0.015625.

Base conversion 81121544

Base System Value
2 Binary 100110101011101000100001000
3 Ternary 12122122101211122
4 Quaternary 10311131010020
5 Quinary 131231342134
6 Senary 12014414412
8 Octal 465350410
10 Decimal 81121544
12 Duodecimal 23201408
16 Hexadecimal 4d5d108
20 Vigesimal 15703h4
36 Base36 1caps8

Cryptographic Hash Functions

md5 e040f54a94a4ffe5efd79c64f230c59d
sha1 30ffaf948895f7892d8dd6f4085208972e50b0b7
sha256 56f82c89d736a18b1f789066db7b016447d4573e42e090a11c6b4f28529b064d
sha512 e76bc82a7cfd40a03a1d42aad31c1eb20e4b3749d813cd2d2dbb9fce8a44fb04eab44d87408147d95c27983d940f6c476299558a52f1bc2a17c7b030662a3273
ripemd-160 472ac44b0e279d8b9051b0707ca2710346f22f2f

81121544 as geometric shapes

Circle

Radius = n
Diameter 162243088
Circumference 509701693.35652
Area 2.0673894172248E+16

Sphere

Radius = n
Volume 2.2361309543271E+24
Surface area 8.2695576688991E+16
Circumference 509701693.35652

Square

Length = n
Perimeter 324486176
Area 6580704900943936
Diagonal 114723187.72545

Cube

Length = n
Surface area 39484229405663616
Volume 5.3383694217294E+23
Space diagonal 140506635.79643

Equilateral Triangle

Length = n
Perimeter 243364632
Area 2.8495288095131E+15
Altitude 70253317.898217

Triangular Pyramid

Length = n
Surface area 2.8495288095131E+15
Volume 6.2913286976396E+22
Height 38241062.575149