165 (number)

165 is an odd 3-digits composite number following 164 and preceding 166. In scientific notation, it is written as 1.65 × 10^2. The sum of its digits is 12. It has a total of 2 prime factors and 4 positive divisors. There are 80 positive integers (up to 165) that are relatively prime to 165.

Interesting facts

Basic properties

Name

Name one hundred sixty-five

Notation

Scientific notation 1.65 × 10^2
Engineering notation 1.65 × 10^0

Prime Factorization of 165

Prime Factorization 15 × 11

Composite number
ω Distinct Factors 2
Total number of distinct prime factors
Ω Total Factors 2
Total number of prime factors
rad Radical 165
Product of the distinct prime numbers

The prime factorization of 165 is 15 × 11. Since it has a total of 2 prime factors.

Most popular turbo-numbers

6, 7, 82, 54, 95, 567, 3095, 6453, 71571, 39832, 958475, 319757, 8186748, 943998, 47227682, 87780956, 928381876, 465866067, 4600792695, 3475271631

Basic calculations (n = 165)

Multiplication

n×y
n×2 330
n×3 495
n×4 660
n×5 825

Division

n÷y
n÷2 82.5
n÷3 55
n÷3 41.25
n÷5 33

Exponentiation

ny
n2 27225
n3 4492125
n4 741200625
n5 122298103125

Nth Root

y√n
2√n 12.845232578665
3√n 5.4848065524326
4√n 3.5840246342157
5√n 2.7764943167341

Divisors of 165

1, 11, 15, 165

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 -164
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 165 can be divided by 4 positive divisors. The sum of these divisors (counting 165) is 1, the average is 0.25.

Base conversion 165

Base System Value
2 Binary 10100101
3 Ternary 20010
4 Quaternary 2211
5 Quinary 1130
6 Senary 433
8 Octal 245
10 Decimal 165
12 Duodecimal 119
16 Hexadecimal a5
20 Vigesimal 85
36 Base36 4l

Cryptographic Hash Functions

md5 9766527f2b5d3e95d4a733fcfb77bd7e
sha1 74cbd2c215c2c13c4b6110ada96de8891b355dda
sha256 bc52dd634277c4a34a2d6210994a9a5e2ab6d33bb4a3a8963410e00ca6c15a02
sha512 6b30dd9237095c5ac6469bfbe617e554d07b483bf751c827d60d030ab23641e82e499802716833712adfc6dca9e71824b5a9bf186ddf836a38fdcf3f4468ff46
ripemd-160 7a5655b8c6bc17def05bb3784eca4f255e74cab0

165 as geometric shapes

Circle

Radius = n
Diameter 330
Circumference 1036.7255756846
Area 85529.859993982

Sphere

Radius = n
Volume 18816569.198676
Surface area 342119.43997593
Circumference 1036.7255756846

Square

Length = n
Perimeter 660
Area 27225
Diagonal 233.34523779156

Cube

Length = n
Surface area 163350
Volume 4492125
Space diagonal 285.78838324886

Equilateral Triangle

Length = n
Perimeter 495
Area 11788.770809016
Altitude 142.89419162443

Triangular Pyramid

Length = n
Surface area 11788.770809016
Volume 529402.0082396
Height 77.78174593052