21001 (number)

21001 is an odd 5-digits prime number following 21000 and preceding 21002. In scientific notation, it is written as 2.1001 × 10^4. The sum of its digits is 4. It has a total of 1 prime factors and 2 positive divisors. There are 21000 positive integers (up to 21001) that are relatively prime to 21001.

Interesting facts

Basic properties

Name

Name twenty-one thousand one

Notation

Scientific notation 2.1001 × 10^4
Engineering notation 2.1001 × 10^3

Prime Factorization of 21001

Prime Factorization 21001

Composite number
ω Distinct Factors 1
Total number of distinct prime factors
Ω Total Factors 1
Total number of prime factors
rad Radical 21001
Product of the distinct prime numbers

The prime factorization of 21001 is 21001. Since it has a total of 1 prime factors.

Most popular turbo-numbers

1, 9, 64, 90, 715, 979, 9819, 9037, 62000, 17186, 837741, 480888, 3740559, 9756236, 6709347, 53889598, 813341701, 463229903, 1011571344, 4297314991

Basic calculations (n = 21001)

Multiplication

n×y
n×2 42002
n×3 63003
n×4 84004
n×5 105005

Division

n÷y
n÷2 10500.5
n÷3 7000.3333333333
n÷3 5250.25
n÷5 4200.2

Exponentiation

ny
n2 441042001
n3 9262323063001
n4 194518046646084001
n5 4.0850734976144E+21

Nth Root

y√n
2√n 144.91721774862
3√n 27.589679681333
4√n 12.038156742152
5√n 7.318936766344

Divisors of 21001

1, 21001

2 divisors

τ Total Divisors 2
Total number of the positive divisors of n
σ Sum of Divisors 21002
Sum of all the positive divisors of n
s Aliquot Sum 1
Sum of the proper positive divisors of n
A Arithmetic Mean 10501
Returns the sum of divisors (σ(n)) divided by the total number of divisors (τ(n))
G Geometric Mean 144.92066795319
Returns the nth root of the product of n divisors
H Harmonic Mean 1.9999047709742
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 21001 can be divided by 2 positive divisors. The sum of these divisors (counting 21001) is 21002, the average is 10501.

Base conversion 21001

Base System Value
2 Binary 101001000001001
3 Ternary 1001210211
4 Quaternary 11020021
5 Quinary 1133001
6 Senary 241121
8 Octal 51011
10 Decimal 21001
12 Duodecimal 101a1
16 Hexadecimal 5209
20 Vigesimal 2ca1
36 Base36 g7d

Cryptographic Hash Functions

md5 3315588acf14179de8e0b2cd9285407f
sha1 8efff2dfea4545e5947d1e0d52da1764c9db7ccb
sha256 ada02680e214f4a148fba73212ee960b04603ca19b2a90bc2ec49a23c3a89eb6
sha512 152433ad4a2397def5260aef8a642a1249f699851508a04f1773816d883afe10acc08914cd5cc76833cd6a6ef5bc07d8a6298c13783c0ed1f8d1a699173da744
ripemd-160 0a667e7203d6c0c74c3583d7fc28ba41781fabb1

21001 as geometric shapes

Circle

Radius = n
Diameter 42002
Circumference 131953.17463608
Area 1385574310.2661

Sphere

Radius = n
Volume 38797928119866
Surface area 5542297241.0646
Circumference 131953.17463608

Square

Length = n
Perimeter 84004
Area 441042001
Diagonal 29699.899023397

Cube

Length = n
Surface area 2646252006
Volume 9262323063001
Space diagonal 36374.799009754

Equilateral Triangle

Length = n
Perimeter 63003
Area 190976788.50096
Altitude 18187.399504877

Triangular Pyramid

Length = n
Surface area 190976788.50096
Volume 1091575241231.4
Height 9899.9663411325