21455 (number)

21455 is an odd 5-digits composite number following 21454 and preceding 21456. In scientific notation, it is written as 2.1455 × 10^4. The sum of its digits is 17. It has a total of 2 prime factors and 4 positive divisors. There are 14688 positive integers (up to 21455) that are relatively prime to 21455.

Interesting facts

Basic properties

Name

Name twenty-one thousand four hundred fifty-five

Notation

Scientific notation 2.1455 × 10^4
Engineering notation 2.1455 × 10^3

Prime Factorization of 21455

Prime Factorization 35 × 613

Composite number
ω Distinct Factors 2
Total number of distinct prime factors
Ω Total Factors 2
Total number of prime factors
rad Radical 21455
Product of the distinct prime numbers

The prime factorization of 21455 is 35 × 613. Since it has a total of 2 prime factors.

Most popular turbo-numbers

6, 7, 82, 82, 265, 419, 7606, 2153, 60609, 49336, 863227, 881051, 8731274, 6072266, 28479798, 58400458, 803319003, 997113523, 5502218981, 5299040193

Basic calculations (n = 21455)

Multiplication

n×y
n×2 42910
n×3 64365
n×4 85820
n×5 107275

Division

n÷y
n÷2 10727.5
n÷3 7151.6666666667
n÷3 5363.75
n÷5 4291

Exponentiation

ny
n2 460317025
n3 9876101771375
n4 211891763504850625
n5 4.5461377859966E+21

Nth Root

y√n
2√n 146.4752538827
3√n 27.787075406119
4√n 12.102696141054
5√n 7.3503108105853

Divisors of 21455

1, 35, 613, 21455

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 -21454
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 21455 can be divided by 4 positive divisors. The sum of these divisors (counting 21455) is 1, the average is 0.25.

Base conversion 21455

Base System Value
2 Binary 101001111001111
3 Ternary 1002102122
4 Quaternary 11033033
5 Quinary 1141310
6 Senary 243155
8 Octal 51717
10 Decimal 21455
12 Duodecimal 104bb
16 Hexadecimal 53cf
20 Vigesimal 2dcf
36 Base36 gjz

Cryptographic Hash Functions

md5 42afdcd383ddd4cbf623792bafdbd6ab
sha1 0d554f938d5a3d1fef0cf0074055fa70171fd13d
sha256 fef5ba8791578319bf83a24a44e833bc1810227dab132c18b54e513d5470fc70
sha512 a04b9b2747dab72ad53c8e0aa5a0793d82396fe45c75f8b0ae51180b7126017aa513bfc2a8e27866aac4a91f9db3019bc96fe4e7362165c712950b8f939defbc
ripemd-160 149b2327232f9d602bfa62e5dcc498c241e75e3a

21455 as geometric shapes

Circle

Radius = n
Diameter 42910
Circumference 134805.74076554
Area 1446128584.0623

Sphere

Radius = n
Volume 41368918361409
Surface area 5784514336.2492
Circumference 134805.74076554

Square

Length = n
Perimeter 85820
Area 460317025
Diagonal 30341.951980715

Cube

Length = n
Surface area 2761902150
Volume 9876101771375
Space diagonal 37161.15007639

Equilateral Triangle

Length = n
Perimeter 64365
Area 199323118.72224
Altitude 18580.575038195

Triangular Pyramid

Length = n
Surface area 199323118.72224
Volume 1163909755704.6
Height 10113.983993572