155661921 (number)

155661921 is an odd 9-digits composite number following 155661920 and preceding 155661922. In scientific notation, it is written as 1.55661921 × 10^8. The sum of its digits is 36. It has a total of 2 prime factors and 4 positive divisors. There are 103774608 positive integers (up to 155661921) that are relatively prime to 155661921.

Interesting facts

Basic properties

Name

Name one hundred fifty-five million six hundred sixty-one thousand nine hundred twenty-one

Notation

Scientific notation 1.55661921 × 10^8
Engineering notation 1.55661921 × 10^6

Prime Factorization of 155661921

Prime Factorization 9 × 17295769

Composite number
ω Distinct Factors 2
Total number of distinct prime factors
Ω Total Factors 2
Total number of prime factors
rad Radical 155661921
Product of the distinct prime numbers

The prime factorization of 155661921 is 9 × 17295769. Since it has a total of 2 prime factors.

Most popular turbo-numbers

Basic calculations (n = 155661921)

Multiplication

n×y
n×2 311323842
n×3 466985763
n×4 622647684
n×5 778309605

Division

n÷y
n÷2 77830960.5
n÷3 51887307
n÷3 38915480.25
n÷5 31132384.2

Exponentiation

ny
n2 24230633649410241
n3 3.7717869809144E+24
n4 5.8712360705193E+32
n5 9.1392788538153E+40

Nth Root

y√n
2√n 12476.454664687
3√n 537.9321014997
4√n 111.6980513021
5√n 43.494713765753

Divisors of 155661921

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 -155661920
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 155661921 can be divided by 4 positive divisors. The sum of these divisors (counting 155661921) is 1, the average is 0.25.

Base conversion 155661921

Base System Value
2 Binary 1001010001110011011001100001
3 Ternary 101211220110000100
4 Quaternary 21101303121201
5 Quinary 304322140141
6 Senary 23240213013
8 Octal 1121633141
10 Decimal 155661921
12 Duodecimal 4416a169
16 Hexadecimal 9473661
20 Vigesimal 28cheg1
36 Base36 2kodi9

Cryptographic Hash Functions

md5 8b70ec1426445744dcad46f6c088c076
sha1 df5233e8422b506beaa56f2482d1bd537dcd3c30
sha256 175901e4231418994b008e6da1332624cde15c469f4cea35afc3010101709aae
sha512 03991926462ab16d50dfcbd90ef2619dba331d4d013a560c15cb77fd3de4e4117fb25ca7695f96b093a4fe9221187cdb702c764e497fdd4fff50a08d6141d82b
ripemd-160 6e5a6a7cd47b3c3c0bfc3d86c634d29227a40b1c

155661921 as geometric shapes

Circle

Radius = n
Diameter 311323842
Circumference 978052694.91455
Area 7.6122780664813E+16

Sphere

Radius = n
Volume 1.5799224360195E+25
Surface area 3.0449112265925E+17
Circumference 978052694.91455

Square

Length = n
Perimeter 622647684
Area 24230633649410241
Diagonal 220139199.82325

Cube

Length = n
Surface area 145383801896461446
Volume 3.7717869809144E+24
Space diagonal 269614355.97577

Equilateral Triangle

Length = n
Perimeter 466985763
Area 1.0492172145092E+16
Altitude 134807177.98789

Triangular Pyramid

Length = n
Surface area 1.0492172145092E+16
Volume 4.4450935856596E+23
Height 73379733.274416