21555 (number)

21555 is an odd 5-digits composite number following 21554 and preceding 21556. In scientific notation, it is written as 2.1555 × 10^4. The sum of its digits is 18. It has a total of 3 prime factors and 8 positive divisors. There are 11472 positive integers (up to 21555) that are relatively prime to 21555.

Interesting facts

Basic properties

Name

Name twenty-one thousand five hundred fifty-five

Notation

Scientific notation 2.1555 × 10^4
Engineering notation 2.1555 × 10^3

Prime Factorization of 21555

Prime Factorization 9 × 5 × 479

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 3
Total number of prime factors
rad Radical 21555
Product of the distinct prime numbers

The prime factorization of 21555 is 9 × 5 × 479. Since it has a total of 3 prime factors.

Most popular turbo-numbers

4, 5, 42, 31, 892, 346, 8478, 2346, 1302, 77386, 681058, 322511, 2074304, 6379548, 17269228, 7240330, 370419623, 652732614, 6611627412, 9284315975

Basic calculations (n = 21555)

Multiplication

n×y
n×2 43110
n×3 64665
n×4 86220
n×5 107775

Division

n÷y
n÷2 10777.5
n÷3 7185
n÷3 5388.75
n÷5 4311

Exponentiation

ny
n2 464618025
n3 10014841528875
n4 215869909154900625
n5 4.6530758918339E+21

Nth Root

y√n
2√n 146.81621163891
3√n 27.830179602114
4√n 12.116773978205
5√n 7.3571499113357

Divisors of 21555

1, 5, 9, 45, 479, 2395, 4311, 21555

8 divisors

τ Total Divisors 8
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -21554
Sum of the proper positive divisors of n
A Arithmetic Mean 0.125
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 8
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 21555 can be divided by 8 positive divisors. The sum of these divisors (counting 21555) is 1, the average is 0.125.

Base conversion 21555

Base System Value
2 Binary 101010000110011
3 Ternary 1002120100
4 Quaternary 11100303
5 Quinary 1142210
6 Senary 243443
8 Octal 52063
10 Decimal 21555
12 Duodecimal 10583
16 Hexadecimal 5433
20 Vigesimal 2dhf
36 Base36 gmr

Cryptographic Hash Functions

md5 7c39352813045206add05c79f8662e1c
sha1 70bea44d2df496e06566e4122637d430d1a73011
sha256 45e8b660700f89ea43c7709d7588d51edfe4e03aaf8296d3eb9728a56c9a6052
sha512 d6ac7eda2d08d48b51bba2352250e28aac42fd7dd563617a93c9944e3952f784e58261978c9a1352e0cf7a551063cce9c4322dc4523049ce0fc615837b427d12
ripemd-160 1749dd03e5b3517d663466d9c035dad79881689c

21555 as geometric shapes

Circle

Radius = n
Diameter 43110
Circumference 135434.05929626
Area 1459640574.0654

Sphere

Radius = n
Volume 41950070098640
Surface area 5838562296.2616
Circumference 135434.05929626

Square

Length = n
Perimeter 86220
Area 464618025
Diagonal 30483.373336952

Cube

Length = n
Surface area 2787708150
Volume 10014841528875
Space diagonal 37334.355157147

Equilateral Triangle

Length = n
Perimeter 64665
Area 201185506.35308
Altitude 18667.177578574

Triangular Pyramid

Length = n
Surface area 201185506.35308
Volume 1180260392929.4
Height 10161.124445651