## The number 33

Numeral systems

Binary: 100001

Septimal (base 7): 45

Octal: 41

Hexadecimal: 21

Base 24: 19

Factorization

33 = 3 × 11

33 has 4 divisors: 1, 3, 11, 33

Sum of all divisors other than 33:

15
Sums & differences

Difference of 2 squares: 33 = 7^{2} - 4^{2} = 17^{2} - 16^{2}

Characteristics

33 is a palindromic number in decimal system

33 is a palindromic number in binary system (100001)

Related primes

The 33th prime number is:

137Previous prime number:

31 — Next prime number:

37