# 45 Number Properties & Facts

Forty-Five

## Primality

Prime Factorization of 45
32 × 51
Number of Divisors of 45
6
1, 3, 5, 9, 15, 45
1, 3, 5, 9, 15, 45
Is 45 Prime?
No

## Trigonometry

Sine of 45
0.85090352453412
Cosecant: 1.1752213631357
Cosine of 45
0.52532198881773
Secant: 1.9035944074044
Tangent of 45
1.6197751905439
Cotangent: 0.61736962378356

## Functions

Square of 45
2025
45 × 45 = 2025
Square Root of 45
6.7082039324994
6.70820393249942 = 45
Natural Logarithm (ln) of 45
3.8066624897703
e3.8066624897703 = 45
Decimal Logarithm (log) of 45
1.6532125137753
101.6532125137753 = 45

## Sequences

Is 45 a Fibonacci Number?
No
Is 45 a Bell Number?
No
Is 45 a Catalan Number?
No
Is 45 a Factorial?
No
Is 45 a Perfect Number?
No

## Translations

How do you say 45 in different languages?
 English forty-five español cuarenta y cinco français quarante-cinq Deutsch fünf­und­vierzig Nederlands vijf­en­veertig русский сорок пять українська сорок пʼять Tiếng Việt bốn mươi lăm العربية خمسة و أربعون עברית ארבעים וחמש हिन्दी पैंतालीस 中文 四十五 日本語 四十五 한국어 사십오 čeština čtyřicet pět hrvatski četrdeset i pet slovenčina štyridsať­päť polski czterdzieści pięć Türkçe kırk beş português quarenta e cinco italiano quaranta­cinque svenska fyrtio­fem suomi neljä­kymmentä­viisi norsk førti­fem Filipino ápat na pû’t limá Melayu empat puluh lima မြန်မာ လေးဆယ်ငါး Indonesia empat puluh lima Kiswahili arobaini na tano

## Numeric Bases

45 in Binary (Base 2)
0b101101
One's Complement: 010010
Two's Complement: 010011
45 in Octal (Base 8)
055
45 in Hexadecimal (Base 16)
0x2D

## Miscellaneous

• 45 is an odd number
• 45 has 2 Significant Figures
• The Hamming Weight of 45 is 4
• 45 is a Hamming (Regular) Number
• 45 is a Humble Number
• 45 is a Polygonal (s < 13) Number: Triangular (9), Hexagonal (5)
• 45 is not a Happy Number
• 45 is not a Self Describing Number
• 45 is not a Palindrome
• 45 is not a Münchhausen Number
• 45 is not an Eban Number
• 45 is a Pernicious Number
• 45 is an Attractive Number
• 45 is not a Perfect Square
• 45 is not a Perfect Power