15661221 (number)

15661221 is an odd 8-digits composite number following 15661220 and preceding 15661222. In scientific notation, it is written as 1.5661221 × 10^7. The sum of its digits is 24. It has a total of 4 prime factors and 16 positive divisors. There are 10108800 positive integers (up to 15661221) that are relatively prime to 15661221.

Interesting facts

Basic properties

Name

Name fifteen million six hundred sixty-one thousand two hundred twenty-one

Notation

Scientific notation 1.5661221 × 10^7
Engineering notation 1.5661221 × 10^6

Prime Factorization of 15661221

Prime Factorization 3 × 157 × 41 × 811

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 15661221
Product of the distinct prime numbers

The prime factorization of 15661221 is 3 × 157 × 41 × 811. Since it has a total of 4 prime factors.

Most popular turbo-numbers

1, 10, 43, 42, 245, 252, 1179, 9951, 94658, 36931, 339811, 957999, 4582917, 4855086, 63501229, 57325825, 63266692, 592873552, 9329475211, 5516252005

Basic calculations (n = 15661221)

Multiplication

n×y
n×2 31322442
n×3 46983663
n×4 62644884
n×5 78306105

Division

n÷y
n÷2 7830610.5
n÷3 5220407
n÷3 3915305.25
n÷5 3132244.2

Exponentiation

ny
n2 245273843210841
n3 3.8412878640443E+21
n4 6.0159258163416E+28
n5 9.4216743729332E+35

Nth Root

y√n
2√n 3957.4260574267
3√n 250.19302958662
4√n 62.90807624961
5√n 27.476734899838

Divisors of 15661221

1, 3, 41, 123, 157, 471, 811, 2433, 6437, 19311, 33251, 99753, 127327, 381981, 5220407, 15661221

16 divisors

τ Total Divisors 16
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -15661220
Sum of the proper positive divisors of n
A Arithmetic Mean 0.0625
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 16
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 15661221 can be divided by 16 positive divisors. The sum of these divisors (counting 15661221) is 1, the average is 0.0625.

Base conversion 15661221

Base System Value
2 Binary 111011101111100010100101
3 Ternary 1002110200011020
4 Quaternary 323233202211
5 Quinary 13002124341
6 Senary 1315401353
8 Octal 73574245
10 Decimal 15661221
12 Duodecimal 52b3259
16 Hexadecimal eef8a5
20 Vigesimal 4hhd11
36 Base36 9bo9x

Cryptographic Hash Functions

md5 8cdccac0ffbe2006100aef493d4850bf
sha1 3834427e0e1e87bdbe0e5e0ec7e20a9bcdc4d425
sha256 b44f27cc91d8a02629709e721b960200ebc00edbc1789eb644c4421bd16376e2
sha512 ab9491b034e1f8a440ba80899cdacd4e8f1f2451838440439ae2890c2592b809fcc37e07ffa184a509d8f615b1296403c7dde8a8a8cad5e7b1a5350d8c9cb6c4
ripemd-160 9e9d2d280b66c2de32d11cf4d43679f473927e33

15661221 as geometric shapes

Circle

Radius = n
Diameter 31322442
Circumference 98402353.679692
Area 7.7055050394891E+14

Sphere

Radius = n
Volume 1.6090348978674E+22
Surface area 3.0822020157957E+15
Circumference 98402353.679692

Square

Length = n
Perimeter 62644884
Area 245273843210841
Diagonal 22148311.141522

Cube

Length = n
Surface area 1471643059265046
Volume 3.8412878640443E+21
Space diagonal 27126030.480565

Equilateral Triangle

Length = n
Perimeter 46983663
Area 1.0620668955221E+14
Altitude 13563015.240282

Triangular Pyramid

Length = n
Surface area 1.0620668955221E+14
Volume 4.5270011619256E+20
Height 7382770.3805074