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

161661 (number)

161661 is an odd 6-digits composite number following 161660 and preceding 161662. In scientific notation, it is written as 1.61661 × 10^5. The sum of its digits is 21. It has a total of 2 prime factors and 4 positive divisors. There are 107772 positive integers (up to 161661) that are relatively prime to 161661.

Interesting facts

161661 has 4 divisors, whose sum is 215552
The reverse of 161661 is 166161
Previous prime number is 3

Basic properties

Is Prime? no
Number parity odd
Number length 6
Sum of Digits 21
Digital Root 3

Name

Name	one hundred sixty-one thousand six hundred sixty-one

Notation

Scientific notation	1.61661 × 10^5
Engineering notation	1.61661 × 10^3

Prime Factorization of 161661

Prime Factorization 3 × 53887

Composite number

ω	Distinct Factors	2	Total number of distinct prime factors
Ω	Total Factors	2	Total number of prime factors
rad	Radical	161661	Product of the distinct prime numbers

The prime factorization of 161661 is 3 × 53887. Since it has a total of 2 prime factors.

Most popular turbo-numbers

10, 4, 96, 31, 605, 187, 953, 3783, 94334, 34527, 661447, 806840, 5184208, 4456077, 92169837, 54242264, 775478253, 132733989, 8171801567, 3067964701

Basic calculations (n = 161661)

Multiplication

n×y

n×2	323322
n×3	484983
n×4	646644
n×5	808305

Division

n÷y

n÷2	80830.5
n÷3	53887
n÷3	40415.25
n÷5	32332.2

Exponentiation

n^y

n²	26134278921
n³	4224893664647781
n⁴	6.8300053472062E+20
n⁵	1.1041454944347E+26

Nth Root

^y√n

²√n	402.07088927203
³√n	54.475566299599
⁴√n	20.051705395602
⁵√n	11.008320168232

Divisors of 161661

1, 3, 53887, 161661

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	-161660	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 161661 can be divided by 4 positive divisors. The sum of these divisors (counting 161661) is 1, the average is 0.25.

Base conversion 161661

Base	System	Value
2	Binary	100111011101111101
3	Ternary	22012202110
4	Quaternary	213131331
5	Quinary	20133121
6	Senary	3244233
8	Octal	473575
10	Decimal	161661
12	Duodecimal	79679
16	Hexadecimal	2777d
20	Vigesimal	10431
36	Base36	3gql

Cryptographic Hash Functions

md5	6137a8b43a1dfcfa6d7bdc9cb95d561a
sha1	b95687d81c82e877ceae9c5a898141a042c372cf
sha256	8365859073d570acba5d72582afa53c20a8ecdbb88dd0a6cdaf0d20b0238d9f5
sha512	d9787381573fd2699f3577037a94a823b0e8395022e807fa7cebac1758e780b3a87b259b4a42c72b73a03d0c4fe8862b2b3fe94f74bc74b5bdee3c0e6b9a940e
ripemd-160	9d0aff04d24ca81d2f8e03fc4633869977ed1d58

161661 as geometric shapes

Circle

Radius = n

Diameter	323322
Circumference	1015746.019944
Area	82103258665.08

Sphere

Radius = n

Volume	1.7697193198741E+16
Surface area	328413034660.32
Circumference	1015746.019944

Square

Length = n

Perimeter	646644
Area	26134278921
Diagonal	228623.1787068

Cube

Length = n

Surface area	156805673526
Volume	4224893664647781
Space diagonal	280005.06560239

Equilateral Triangle

Length = n

Perimeter	484983
Area	11316474727.587
Altitude	140002.5328012

Triangular Pyramid

Length = n

Surface area	11316474727.587
Volume	4.9790849334409E+14
Height	76207.726235599