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

21491251 (number)

21491251 is an odd 8-digits prime number following 21491250 and preceding 21491252. In scientific notation, it is written as 2.1491251 × 10^7. The sum of its digits is 25. It has a total of 1 prime factors and 2 positive divisors. There are 21491250 positive integers (up to 21491251) that are relatively prime to 21491251.

Interesting facts

21491251 has 2 divisors, whose sum is 21491252
The reverse of 21491251 is 15219412
Previous prime number is 1

Basic properties

Is Prime? yes
Number parity odd
Number length 8
Sum of Digits 25
Digital Root 7

Name

Name	twenty-one million four hundred ninety-one thousand two hundred fifty-one

Notation

Scientific notation	2.1491251 × 10^7
Engineering notation	2.1491251 × 10^6

Prime Factorization of 21491251

Prime Factorization 21491251

Composite number

ω	Distinct Factors	1	Total number of distinct prime factors
Ω	Total Factors	1	Total number of prime factors
rad	Radical	21491251	Product of the distinct prime numbers

The prime factorization of 21491251 is 21491251. Since it has a total of 1 prime factors.

Most popular turbo-numbers

6, 3, 65, 59, 829, 460, 2449, 4334, 25186, 95818, 401095, 321362, 1477838, 3870098, 38494299, 24486227, 863066808, 44862230, 8191172674, 6203980579

Basic calculations (n = 21491251)

Multiplication

n×y

n×2	42982502
n×3	64473753
n×4	85965004
n×5	107456255

Division

n÷y

n÷2	10745625.5
n÷3	7163750.3333333
n÷3	5372812.75
n÷5	4298250.2

Exponentiation

n^y

n²	461873869545001
n³	9.9262472607329E+21
n⁴	2.1332747136847E+29
n⁵	4.5846742323752E+36

Nth Root

^y√n

²√n	4635.8657228181
³√n	278.02716553886
⁴√n	68.087192061489
⁵√n	29.271996144657

Divisors of 21491251

1, 21491251

2 divisors

τ	Total Divisors	2	Total number of the positive divisors of n
σ	Sum of Divisors	21491252	Sum of all the positive divisors of n
s	Aliquot Sum	1	Sum of the proper positive divisors of n
A	Arithmetic Mean	10745626	Returns the sum of divisors (σ(n)) divided by the total number of divisors (τ(n))
G	Geometric Mean	4635.8658306728	Returns the nth root of the product of n divisors
H	Harmonic Mean	1.9999999069389	Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 21491251 can be divided by 2 positive divisors. The sum of these divisors (counting 21491251) is 21491252, the average is 10745626.

Base conversion 21491251

Base	System	Value
2	Binary	1010001111110111000110011
3	Ternary	1111102212110021
4	Quaternary	1101332320303
5	Quinary	21000210001
6	Senary	2044344311
8	Octal	121767063
10	Decimal	21491251
12	Duodecimal	7245097
16	Hexadecimal	147ee33
20	Vigesimal	6e682b
36	Base36	csmr7

Cryptographic Hash Functions

md5	edbd5525bc05e9cd3d620843cf9037aa
sha1	d7449ef8592397db1dc965b384688fee7d8d3f3a
sha256	b7a2c9443aa8eea6e77aa31085d3d1d7bec21233097c9b4a1336207f880c581c
sha512	5668ff4f8891bb876bb49edf64d25331c0629470ef4a5cd19da4fc16e5a581d4843a9651a9ce174cf663dd803b9ce5dd7b451e94df9853d941187654ec7bc647
ripemd-160	5a2e65ea4b734a646990a606250d9fff976c8ef8

21491251 as geometric shapes

Circle

Radius = n

Diameter	42982502
Circumference	135033512.51611
Area	1.4510195554477E+15

Sphere

Radius = n

Volume	4.1578967296046E+22
Surface area	5.8040782217907E+15
Circumference	135033512.51611

Square

Length = n

Perimeter	85965004
Area	461873869545001
Diagonal	30393218.636564

Cube

Length = n

Surface area	2771243217270006
Volume	9.9262472607329E+21
Space diagonal	37223938.650215

Equilateral Triangle

Length = n

Perimeter	64473753
Area	1.999972521851E+14
Altitude	18611969.325108

Triangular Pyramid

Length = n

Surface area	1.999972521851E+14
Volume	1.1698194582998E+21
Height	10131072.878855