21553987 (number)

21553987 is an odd 8-digits composite number following 21553986 and preceding 21553988. In scientific notation, it is written as 2.1553987 × 10^7. The sum of its digits is 40. It has a total of 4 prime factors and 16 positive divisors. There are 16174080 positive integers (up to 21553987) that are relatively prime to 21553987.

Interesting facts

Basic properties

Name

Name twenty-one million five hundred fifty-three thousand nine hundred eighty-seven

Notation

Scientific notation 2.1553987 × 10^7
Engineering notation 2.1553987 × 10^6

Prime Factorization of 21553987

Prime Factorization 91 × 41 × 53 × 109

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 21553987
Product of the distinct prime numbers

The prime factorization of 21553987 is 91 × 41 × 53 × 109. Since it has a total of 4 prime factors.

Most popular turbo-numbers

8, 5, 56, 87, 455, 608, 3780, 4329, 79891, 15475, 431343, 654520, 5218602, 1481441, 86394022, 39632203, 667351652, 776548371, 5882242771, 5987094174

Basic calculations (n = 21553987)

Multiplication

n×y
n×2 43107974
n×3 64661961
n×4 86215948
n×5 107769935

Division

n÷y
n÷2 10776993.5
n÷3 7184662.3333333
n÷3 5388496.75
n÷5 4310797.4

Exponentiation

ny
n2 464574355596169
n3 1.0013429621053E+22
n4 2.158293318776E+29
n5 4.6519826135084E+36

Nth Root

y√n
2√n 4642.6271657328
3√n 278.29743625719
4√n 68.136826795301
5√n 29.289066043514

Divisors of 21553987

1, 41, 53, 91, 109, 2173, 3731, 4469, 4823, 5777, 9919, 197743, 236857, 406679, 525707, 21553987

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 -21553986
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 21553987 can be divided by 16 positive divisors. The sum of these divisors (counting 21553987) is 1, the average is 0.0625.

Base conversion 21553987

Base System Value
2 Binary 1010010001110001101000011
3 Ternary 1111120001111211
4 Quaternary 1102032031003
5 Quinary 21004211422
6 Senary 2045550551
8 Octal 122161503
10 Decimal 21553987
12 Duodecimal 7275457
16 Hexadecimal 148e343
20 Vigesimal 6ee4j7
36 Base36 ctz5v

Cryptographic Hash Functions

md5 565c36cd0403727a6b6c80bc3b0a1e70
sha1 b1e03541e6e5bc82bdf3becf3ce1d89b65b9430b
sha256 4134cce47c21d4c459297e2601780790cb12fa5008bd9cda22807f65d5a30f80
sha512 cd07b3a92265dbc42a689d8b634aaf03e50680d084596d2d68aef82f90d7d93fb3f4e9375b4f102b04ca78c447ff0fbe1a96455f5f92e6c641bd879943c2ddcc
ripemd-160 40b864d6e02934e966d1041c1ee2e42e5b145a1b

21553987 as geometric shapes

Circle

Radius = n
Diameter 43107974
Circumference 135427694.42954
Area 1.4595033825871E+15

Sphere

Radius = n
Volume 4.1944155912986E+22
Surface area 5.8380135303485E+15
Circumference 135427694.42954

Square

Length = n
Perimeter 86215948
Area 464574355596169
Diagonal 30481940.738613

Cube

Length = n
Surface area 2787446133577014
Volume 1.0013429621053E+22
Space diagonal 37332600.589679

Equilateral Triangle

Length = n
Perimeter 64661961
Area 2.0116659694653E+14
Altitude 18666300.29484

Triangular Pyramid

Length = n
Surface area 2.0116659694653E+14
Volume 1.1800939979968E+21
Height 10160646.912871