21557 (number)

21557 is an odd 5-digits prime number following 21556 and preceding 21558. In scientific notation, it is written as 2.1557 × 10^4. The sum of its digits is 20. It has a total of 1 prime factors and 2 positive divisors. There are 21556 positive integers (up to 21557) that are relatively prime to 21557.

Interesting facts

Basic properties

Name

Name twenty-one thousand five hundred fifty-seven

Notation

Scientific notation 2.1557 × 10^4
Engineering notation 2.1557 × 10^3

Prime Factorization of 21557

Prime Factorization 21557

Composite number
ω Distinct Factors 1
Total number of distinct prime factors
Ω Total Factors 1
Total number of prime factors
rad Radical 21557
Product of the distinct prime numbers

The prime factorization of 21557 is 21557. Since it has a total of 1 prime factors.

Most popular turbo-numbers

7, 3, 21, 3, 424, 348, 1997, 9904, 69305, 85564, 473514, 314543, 6797917, 1955611, 50822598, 4310840, 326107093, 695166686, 8706748110, 8587022794

Basic calculations (n = 21557)

Multiplication

n×y
n×2 43114
n×3 64671
n×4 86228
n×5 107785

Division

n÷y
n÷2 10778.5
n÷3 7185.6666666667
n÷3 5389.25
n÷5 4311.4

Exponentiation

ny
n2 464704249
n3 10017629495693
n4 215950039038654001
n5 4.6552349915563E+21

Nth Root

y√n
2√n 146.82302271783
3√n 27.831040324882
4√n 12.11705503486
5√n 7.357286434219

Divisors of 21557

1, 21557

2 divisors

τ Total Divisors 2
Total number of the positive divisors of n
σ Sum of Divisors 21558
Sum of all the positive divisors of n
s Aliquot Sum 1
Sum of the proper positive divisors of n
A Arithmetic Mean 10779
Returns the sum of divisors (σ(n)) divided by the total number of divisors (τ(n))
G Geometric Mean 146.82642813881
Returns the nth root of the product of n divisors
H Harmonic Mean 1.9999072270155
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 21557 can be divided by 2 positive divisors. The sum of these divisors (counting 21557) is 21558, the average is 10779.

Base conversion 21557

Base System Value
2 Binary 101010000110101
3 Ternary 1002120102
4 Quaternary 11100311
5 Quinary 1142212
6 Senary 243445
8 Octal 52065
10 Decimal 21557
12 Duodecimal 10585
16 Hexadecimal 5435
20 Vigesimal 2dhh
36 Base36 gmt

Cryptographic Hash Functions

md5 ca491b18f3ec94170f37a9b561f2060c
sha1 419ac4c9bfe6c4d087423f8cdfec6bc23be4e2ef
sha256 30ba32ee094143fef2768652b29f1c34d29fa7886f0d9500fac665c1fcd8fe96
sha512 765e6bcb669878c3f5388441bdb81ea9fa7c502a45e22af02daae3893c2619e84de70470b036c27cb7e68b27089ed152e8382e3de457603f96a7200f30990249
ripemd-160 ae3610163fccace4750ced171efbe2fb190409b0

21557 as geometric shapes

Circle

Radius = n
Diameter 43114
Circumference 135446.62566687
Area 1459911454.7504

Sphere

Radius = n
Volume 41961748306738
Surface area 5839645819.0014
Circumference 135446.62566687

Square

Length = n
Perimeter 86228
Area 464704249
Diagonal 30486.201764077

Cube

Length = n
Surface area 2788225494
Volume 10017629495693
Space diagonal 37337.819258762

Equilateral Triangle

Length = n
Perimeter 64671
Area 201222842.44028
Altitude 18668.909629381

Triangular Pyramid

Length = n
Surface area 201222842.44028
Volume 1180588957969.8
Height 10162.067254692