# 45

9

6

78

45 = 3 × 3 × 5

Factor Count
3 2
5 1

2025

91125

## Square root of 45

6.70820393249936941515443322714418...

## Cube root of 45

3.55689330449006257950372855702881...

1035

## Reciprocal of 45

0.0222222222222222

101101

6

## Octal of 45

55

2d

 Prime number No Hexagonal number Yes Perfect number No Deficient number No Abundant number No Mersenne number No Harshad number Yes Harmonic divisor number No

QR45 (sequence)

64

24

12

0

## Properties of 45

Properties of the number 45: 45 has 6 divisors. The divisors of 45 are 1, 3, 5, 9, 15, 45 and the sum of them is 78. The factorization of 45 is 3 × 3 × 5. The square and cube of 45 are 2025 and 91125 respectively. The square root and cube root of 45 are 6.70820393249936941515443322714418... and 3.55689330449006257950372855702881.... The binary, octal, hexadecimal of 45 are 101101, 55, 2d. 45 is not a prime number, hexagonal number, not perfect number, not deficient number, not Mersenne number, not Mersenne number, Harshad number, not harmonic divisor number.

## sin 45

0.85090352453411843836050820755190...

## cos 45

0.52532198881772973475534627141315...

## tan 45

1.61977519054386154273572628881084...

## sin 45°

0.70710678118654746171500846685376...

## cos 45°

0.70710678118654757273731092936941...

1

## log 45

3.80666248977031962397177267121151...

## log10 45

1.65321251377534372828392861265456...

## log2 45

5.49185309632967477710963066783734...