81509997 (number)

81509997 is an odd 8-digits composite number following 81509996 and preceding 81509998. In scientific notation, it is written as 8.1509997 × 10^7. The sum of its digits is 48. It has a total of 4 prime factors and 16 positive divisors. There are 53669952 positive integers (up to 81509997) that are relatively prime to 81509997.

Interesting facts

Basic properties

Name

Name eighty-one million five hundred nine thousand nine hundred ninety-seven

Notation

Scientific notation 8.1509997 × 10^7
Engineering notation 8.1509997 × 10^6

Prime Factorization of 81509997

Prime Factorization 3 × 127 × 349 × 613

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 81509997
Product of the distinct prime numbers

The prime factorization of 81509997 is 3 × 127 × 349 × 613. Since it has a total of 4 prime factors.

Most popular turbo-numbers

10, 7, 94, 4, 176, 558, 8697, 7385, 61256, 96327, 220786, 501948, 4489900, 5172656, 49514450, 646525, 228456932, 615355286, 7405117598, 5853201550

Basic calculations (n = 81509997)

Multiplication

n×y
n×2 163019994
n×3 244529991
n×4 326039988
n×5 407549985

Division

n÷y
n÷2 40754998.5
n÷3 27169999
n÷3 20377499.25
n÷5 16301999.4

Exponentiation

ny
n2 6643879610940009
n3 5.4154260715608E+23
n4 4.4141136284664E+31
n5 3.5979438861396E+39

Nth Root

y√n
2√n 9028.2887082769
3√n 433.58104962102
4√n 95.01730741437
5√n 38.215731364072

Divisors of 81509997

1, 3, 127, 349, 381, 613, 1047, 1839, 44323, 77851, 132969, 213937, 233553, 641811, 27169999, 81509997

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 -81509996
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 81509997 can be divided by 16 positive divisors. The sum of these divisors (counting 81509997) is 1, the average is 0.0625.

Base conversion 81509997

Base System Value
2 Binary 100110110111011111001101101
3 Ternary 12200101010200210
4 Quaternary 10312323321231
5 Quinary 131331304442
6 Senary 12031013033
8 Octal 466737155
10 Decimal 81509997
12 Duodecimal 2336a179
16 Hexadecimal 4dbbe6d
20 Vigesimal 1598ejh
36 Base36 1cj1il

Cryptographic Hash Functions

md5 d498240ac1750c8823bacba00735391d
sha1 cea636aae2dbf323d6494f45b06f91ba4eb4d637
sha256 95fa21a518226d258e02c6989e9cb1789fbfb9c41b304166291d435c389e2bbe
sha512 f0e6de7df3954b60ae3ecbd26f2ff11f93b07d3fd05c92f4d81a65f6cfd904deb87042c8ab31349ffcf09d089c9fb59f970181c33cd7873fd2c3cbf5d128324a
ripemd-160 00f79642081593a26b7f1cf05c82b51155b3a0d5

81509997 as geometric shapes

Circle

Radius = n
Diameter 163019994
Circumference 512142415.53865
Area 2.0872363377064E+16

Sphere

Radius = n
Volume 2.2684083683299E+24
Surface area 8.3489453508257E+16
Circumference 512142415.53865

Square

Length = n
Perimeter 326039988
Area 6643879610940009
Diagonal 115272543.22639

Cube

Length = n
Surface area 39863277665640054
Volume 5.4154260715608E+23
Space diagonal 141179456.12879

Equilateral Triangle

Length = n
Perimeter 244529991
Area 2.8768842613798E+15
Altitude 70589728.064393

Triangular Pyramid

Length = n
Surface area 2.8768842613798E+15
Volume 6.3821408303585E+22
Height 38424181.075463