Number 45

Interestingness: 11 · Rank #154 of 1000

Visual representations

Binary image (n×n bits)
Element Rh – Rhodium
Triangular · P3(9) = 45
Hexagonal · P6(5) = 45
3²5
Prime factorization

Representations of 45

Greek numeral
μεʹ
Sanskrit numeral
४५
Arabic numeral
٤٥
Roman numeral
XLV
Maya numeral
●●
▃▃▃▃▃
Chinese numeral
四十五
Hebrew numeral
מה
Egyptian numeral
𓎆𓎆𓎆𓎆
𓏹𓏹𓏹𓏹𓏹
Morse code
....-.....

45 in different numeral systems

Binary
101101
Base-3
1200
Base-4
231
Base-5
140
Base-6
113
Base-7
63
Base-8
55
Duodecimal
39
Hex
2d
Vigesimal
25
Base-24
1l
Base-36
19
Negabinary
1111101

Factorization

Prime factors: 3, 5
Divisors: 1, 3, 5, 9, 15, 45
Sum of divisors other than 45: 33
Product of prime factors: 45 = 3 × 3 × 5

Number-theory characteristics (7)

Triangular Hexagonal Difference of 2 squares Evil number Odd Composite Deficient

Base-10 digit properties (2)

These depend on the decimal representation of the number.

Harshad Kaprekar

Related primes

Number 45 prime
Prime number before 45
Prime number after 45