21551731 (number)

21551731 is an odd 8-digits composite number following 21551730 and preceding 21551732. In scientific notation, it is written as 2.1551731 × 10^7. The sum of its digits is 25. It has a total of 2 prime factors and 4 positive divisors. There are 21439872 positive integers (up to 21551731) that are relatively prime to 21551731.

Interesting facts

Basic properties

Name

Name twenty-one million five hundred fifty-one thousand seven hundred thirty-one

Notation

Scientific notation 2.1551731 × 10^7
Engineering notation 2.1551731 × 10^6

Prime Factorization of 21551731

Prime Factorization 193 × 111667

Composite number
ω Distinct Factors 2
Total number of distinct prime factors
Ω Total Factors 2
Total number of prime factors
rad Radical 21551731
Product of the distinct prime numbers

The prime factorization of 21551731 is 193 × 111667. Since it has a total of 2 prime factors.

Most popular turbo-numbers

4, 1, 33, 8, 366, 152, 3005, 5142, 48899, 90024, 214494, 637712, 4690109, 1743031, 83482016, 44742175, 49775712, 399848187, 6288374981, 7612120914

Basic calculations (n = 21551731)

Multiplication

n×y
n×2 43103462
n×3 64655193
n×4 86206924
n×5 107758655

Division

n÷y
n÷2 10775865.5
n÷3 7183910.3333333
n÷3 5387932.75
n÷5 4310346.2

Exponentiation

ny
n2 464477109096361
n3 1.0010285710902E+22
n4 2.1573898487451E+29
n5 4.6495485682286E+36

Nth Root

y√n
2√n 4642.3841934937
3√n 278.2877263611
4√n 68.135043799015
5√n 29.288452895704

Divisors of 21551731

1, 193, 111667, 21551731

4 divisors

τ Total Divisors 4
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -21551730
Sum of the proper positive divisors of n
A Arithmetic Mean 0.25
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 4
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 21551731 can be divided by 4 positive divisors. The sum of these divisors (counting 21551731) is 1, the average is 0.25.

Base conversion 21551731

Base System Value
2 Binary 1010010001101101001110011
3 Ternary 1111112221102021
4 Quaternary 1102031221303
5 Quinary 21004123411
6 Senary 2045532311
8 Octal 122155163
10 Decimal 21551731
12 Duodecimal 7274097
16 Hexadecimal 148da73
20 Vigesimal 6edj6b
36 Base36 ctxf7

Cryptographic Hash Functions

md5 c0e493c0368e06b2ad01a72e8c9e2f5d
sha1 30f78d486a59d9f2e6242874bf9f6044715afdd9
sha256 fa9284a066096e16748c7cdaec508da9e89ce26ecc8189844b9e33e1e84d7c8d
sha512 aabe54b5225abd14513fbf8b4d6ee45a6335bb21dc0489e16a30f1393caccf409be3429c30bc5092204a8df1dcad5bfabf2bcedf927a5fd20748c7a7b30cff2c
ripemd-160 5a49e747de2798217a69162efae6c042121cc2ac

21551731 as geometric shapes

Circle

Radius = n
Diameter 43103462
Circumference 135413519.56349
Area 1.4591978736978E+15

Sphere

Radius = n
Volume 4.1930986732941E+22
Surface area 5.836791494791E+15
Circumference 135413519.56349

Square

Length = n
Perimeter 86206924
Area 464477109096361
Diagonal 30478750.272817

Cube

Length = n
Surface area 2786862654578166
Volume 1.0010285710902E+22
Space diagonal 37328693.083057

Equilateral Triangle

Length = n
Perimeter 64655193
Area 2.011244879769E+14
Altitude 18664346.541529

Triangular Pyramid

Length = n
Surface area 2.011244879769E+14
Volume 1.1797234846323E+21
Height 10159583.424272