261566991 (number)

261566991 is an odd 9-digits composite number following 261566990 and preceding 261566992. In scientific notation, it is written as 2.61566991 × 10^8. The sum of its digits is 45. It has a total of 5 prime factors and 24 positive divisors. There are 149299200 positive integers (up to 261566991) that are relatively prime to 261566991.

Interesting facts

Basic properties

Name

Name two hundred sixty-one million five hundred sixty-six thousand nine hundred ninety-one

Notation

Scientific notation 2.61566991 × 10^8
Engineering notation 2.61566991 × 10^6

Prime Factorization of 261566991

Prime Factorization 3 × 3 × 7 × 1201 × 3457

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 5
Total number of prime factors
rad Radical 87188997
Product of the distinct prime numbers

The prime factorization of 261566991 is 3 × 3 × 7 × 1201 × 3457. Since it has a total of 5 prime factors.

Most popular turbo-numbers

9, 5, 99, 53, 388, 188, 9335, 5056, 69956, 40425, 390877, 53302, 7643310, 2559891, 98362661, 62068069, 642181627, 171740659, 5020479188, 5982849654

Basic calculations (n = 261566991)

Multiplication

n×y
n×2 523133982
n×3 784700973
n×4 1046267964
n×5 1307834955

Division

n÷y
n÷2 130783495.5
n÷3 87188997
n÷3 65391747.75
n÷5 52313398.2

Exponentiation

ny
n2 68417290780794081
n3 1.7895704881904E+25
n4 4.6809256777837E+33
n5 1.2243756446325E+42

Nth Root

y√n
2√n 16173.032832465
3√n 639.53008392515
4√n 127.17323945102
5√n 48.252140894863

Divisors of 261566991

1, 3, 7, 9, 21, 63, 1201, 3457, 3603, 8407, 10371, 10809, 24199, 25221, 31113, 72597, 75663, 217791, 4151857, 12455571, 29062999, 37366713, 87188997, 261566991

24 divisors

τ Total Divisors 24
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -261566990
Sum of the proper positive divisors of n
A Arithmetic Mean 0.041666666666667
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 24
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 261566991 can be divided by 24 positive divisors. The sum of these divisors (counting 261566991) is 1, the average is 0.041666666666667.

Base conversion 261566991

Base System Value
2 Binary 1111100101110011001000001111
3 Ternary 200020011222110100
4 Quaternary 33211303020033
5 Quinary 1013430120431
6 Senary 41542142143
8 Octal 1745631017
10 Decimal 261566991
12 Duodecimal 73721953
16 Hexadecimal f97320f
20 Vigesimal 41efh9b
36 Base36 4bqadr

Cryptographic Hash Functions

md5 fb8c2d341a114a27133671a7919287b4
sha1 0cc3e2e870f7db3e42ab981923a4d5327f68ed19
sha256 bd6b0070684f7ec7c30030498592d5e320ed6af942fa1ee26a8fd0c6fd148876
sha512 3692b689c5d604231181007e73020b46617843ea9f3a84923fb9b03fc7e11c44b08877c4511e2986ad0dd8a9c7c1179a078e15da3a8aace6a2876b4645064a73
ripemd-160 c14febba569c9190be4f24d50f1366ee81fcd6a2

261566991 as geometric shapes

Circle

Radius = n
Diameter 523133982
Circumference 1643473874.6944
Area 2.1493925809546E+17

Sphere

Radius = n
Volume 7.4961353317069E+25
Surface area 8.5975703238184E+17
Circumference 1643473874.6944

Square

Length = n
Perimeter 1046267964
Area 68417290780794081
Diagonal 369911586.14132

Cube

Length = n
Surface area 410503744684764486
Volume 1.7895704881904E+25
Space diagonal 453047317.99491

Equilateral Triangle

Length = n
Perimeter 784700973
Area 2.9625555937137E+16
Altitude 226523658.99746

Triangular Pyramid

Length = n
Surface area 2.9625555937137E+16
Volume 2.109029046018E+24
Height 123303862.04711