Max	9223372036854775807
25835	Positive integer
0b10001100	Binary number
01771452	Octal number
0x129abf	Hex number
5.012 * 10^7	Scientific notation
2^4 * 5	Factorized form
*	Random number

21081251 (number)

21081251 is an odd 8-digits composite number following 21081250 and preceding 21081252. In scientific notation, it is written as 2.1081251 × 10^7. The sum of its digits is 20. It has a total of 2 prime factors and 4 positive divisors. There are 20964600 positive integers (up to 21081251) that are relatively prime to 21081251.

Interesting facts

21081251 has 4 divisors, whose sum is 21197904
The reverse of 21081251 is 15218012
Previous prime number is 181

Basic properties

Is Prime? no
Number parity odd
Number length 8
Sum of Digits 20
Digital Root 2

Name

Name	twenty-one million eighty-one thousand two hundred fifty-one

Notation

Scientific notation	2.1081251 × 10^7
Engineering notation	2.1081251 × 10^6

Prime Factorization of 21081251

Prime Factorization 181 × 116471

Composite number

ω	Distinct Factors	2	Total number of distinct prime factors
Ω	Total Factors	2	Total number of prime factors
rad	Radical	21081251	Product of the distinct prime numbers

The prime factorization of 21081251 is 181 × 116471. Since it has a total of 2 prime factors.

Most popular turbo-numbers

6, 9, 55, 31, 968, 981, 2338, 455, 54856, 97562, 718438, 4932, 5449516, 4204854, 79260069, 72146330, 922944363, 452760438, 2416259414, 9381522602

Basic calculations (n = 21081251)

Multiplication

n×y

n×2	42162502
n×3	63243753
n×4	84325004
n×5	105406255

Division

n÷y

n÷2	10540625.5
n÷3	7027083.6666667
n÷3	5270312.75
n÷5	4216250.2

Exponentiation

n^y

n²	444419143725001
n³	9.3689115180718E+21
n⁴	1.9750837530926E+29
n⁵	4.1637236344968E+36

Nth Root

^y√n

²√n	4591.4323473182
³√n	276.24777773715
⁴√n	67.760108820147
⁵√n	29.159446487365

Divisors of 21081251

1, 181, 116471, 21081251

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	-21081250	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 21081251 can be divided by 4 positive divisors. The sum of these divisors (counting 21081251) is 1, the average is 0.25.

Base conversion 21081251

Base	System	Value
2	Binary	1010000011010110010100011
3	Ternary	1110200001001002
4	Quaternary	1100122302203
5	Quinary	20344100001
6	Senary	2031502215
8	Octal	120326243
10	Decimal	21081251
12	Duodecimal	708796b
16	Hexadecimal	141aca3
20	Vigesimal	6bf32b
36	Base36	cjueb

Cryptographic Hash Functions

md5	75928f594cdb173c7dcec623d8f3dfa1
sha1	50835c2fb3365b78400c3932af0437494356225d
sha256	182ce203a506e0d97d540295bd4699f965ee47e938cccaf45a98e106f89761df
sha512	965e73c1df8c28b474df628e01c5a4c07f7caa4882fae2df1d0c754da0024dd3ecfe4a3c40f8cd5899a1bc75fe5a67e1ff5f3cd456e900a3f91c6deca1078372
ripemd-160	29809249f7dff9884bb9fb4fcb512468ba851a51

21081251 as geometric shapes

Circle

Radius = n

Diameter	42162502
Circumference	132457406.54016
Area	1.3961839170411E+15

Sphere

Radius = n

Volume	3.924440479641E+22
Surface area	5.5847356681645E+15
Circumference	132457406.54016

Square

Length = n

Perimeter	84325004
Area	444419143725001
Diagonal	29813391.075991

Cube

Length = n

Surface area	2666514862350006
Volume	9.3689115180718E+21
Space diagonal	36513797.819112

Equilateral Triangle

Length = n

Perimeter	63243753
Area	1.9243913419699E+14
Altitude	18256898.909556

Triangular Pyramid

Length = n

Surface area	1.9243913419699E+14
Volume	1.1041368111276E+21
Height	9937797.0253305