56533 has 2 divisors, whose sum is σ = 56534. Its totient is φ = 56532.

The previous prime is 56531. The next prime is 56543. The reversal of 56533 is 33565.

56533 is nontrivially palindromic in base 14.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 33124 + 23409 = 182^2 + 153^2 .

It is a cyclic number.

It is not a de Polignac number, because 56533 - 2¹ = 56531 is a prime.

Together with 56531, it forms a pair of twin primes.

It is an Ulam number.

56533 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28266 + 28267.

It is an arithmetic number, because the mean of its divisors is an integer number (28267).

2⁵⁶⁵³³ is an apocalyptic number.

It is an amenable number.

56533 is a deficient number, since it is larger than the sum of its proper divisors (1).

56533 is an equidigital number, since it uses as much as digits as its factorization.

56533 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1350, while the sum is 22.

The square root of 56533 is about 237.7666923688. The cubic root of 56533 is about 38.3796206244.

The spelling of 56533 in words is "fifty-six thousand, five hundred thirty-three".