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

20151221 (number)

20151221 is an odd 8-digits prime number following 20151220 and preceding 20151222. In scientific notation, it is written as 2.0151221 × 10^7. The sum of its digits is 14. It has a total of 1 prime factors and 2 positive divisors. There are 20151220 positive integers (up to 20151221) that are relatively prime to 20151221.

Interesting facts

20151221 has 2 divisors, whose sum is 20151222
The reverse of 20151221 is 12215102
Previous prime number is 1

Basic properties

Is Prime? yes
Number parity odd
Number length 8
Sum of Digits 14
Digital Root 5

Name

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

Notation

Scientific notation	2.0151221 × 10^7
Engineering notation	2.0151221 × 10^6

Prime Factorization of 20151221

Prime Factorization 20151221

Composite number

ω	Distinct Factors	1	Total number of distinct prime factors
Ω	Total Factors	1	Total number of prime factors
rad	Radical	20151221	Product of the distinct prime numbers

The prime factorization of 20151221 is 20151221. Since it has a total of 1 prime factors.

Most popular turbo-numbers

6, 10, 79, 92, 48, 826, 1916, 2476, 95443, 87792, 128735, 849450, 4733163, 9614052, 52340590, 63649008, 21564396, 441335318, 7267485830, 1522529210

Basic calculations (n = 20151221)

Multiplication

n×y

n×2	40302442
n×3	60453663
n×4	80604884
n×5	100756105

Division

n÷y

n÷2	10075610.5
n÷3	6717073.6666667
n÷3	5037805.25
n÷5	4030244.2

Exponentiation

n^y

n²	406071707790841
n³	8.1828407255407E+21
n⁴	1.6489423186817E+29
n⁵	3.3228201080007E+36

Nth Root

^y√n

²√n	4489.0111383243
³√n	272.12417286739
⁴√n	67.000083121772
⁵√n	28.897500052728

Divisors of 20151221

1, 20151221

2 divisors

τ	Total Divisors	2	Total number of the positive divisors of n
σ	Sum of Divisors	20151222	Sum of all the positive divisors of n
s	Aliquot Sum	1	Sum of the proper positive divisors of n
A	Arithmetic Mean	10075611	Returns the sum of divisors (σ(n)) divided by the total number of divisors (τ(n))
G	Geometric Mean	4489.0112497074	Returns the nth root of the product of n divisors
H	Harmonic Mean	1.9999999007504	Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 20151221 can be divided by 2 positive divisors. The sum of these divisors (counting 20151221) is 20151222, the average is 10075611.

Base conversion 20151221

Base	System	Value
2	Binary	1001100110111101110110101
3	Ternary	1101220210021112
4	Quaternary	1030313232311
5	Quinary	20124314341
6	Senary	1555524405
8	Octal	114675665
10	Decimal	20151221
12	Duodecimal	68b9705
16	Hexadecimal	1337bb5
20	Vigesimal	65ii11
36	Base36	bzws5

Cryptographic Hash Functions

md5	a3235f445c810a83fd1af8ded76241d7
sha1	4bfb47937a07ff94da9f132dcd289b8610822580
sha256	2c58020533a1ee1db4c8523b00a7e6d5274227fcb7d554f79c86ec0cb5883703
sha512	913703850f75e67244d999732a7619f9646687c99c4daf6b77cac54a4dbcb9d08235e2e77a61d45f724e9fba532411f2c0537f0698c042449ec09f8dcc76dbb4
ripemd-160	50fd7192f1934fea5362cc11df3779fecbfb50db

20151221 as geometric shapes

Circle

Radius = n

Diameter	40302442
Circumference	126613855.70893
Area	1.2757118940264E+15

Sphere

Radius = n

Volume	3.4276203078472E+22
Surface area	5.1028475761055E+15
Circumference	126613855.70893

Square

Length = n

Perimeter	80604884
Area	406071707790841
Diagonal	28498130.036578

Cube

Length = n

Surface area	2436430246745046
Volume	8.1828407255407E+21
Space diagonal	34902938.606549

Equilateral Triangle

Length = n

Perimeter	60453663
Area	1.758342073525E+14
Altitude	17451469.303274

Triangular Pyramid

Length = n

Surface area	1.758342073525E+14
Volume	9.6435702773321E+20
Height	9499376.6788592