56732531 has 4 divisors (see below), whose sum is σ = 56779632. Its totient is φ = 56685432.

The previous prime is 56732527. The next prime is 56732549. The reversal of 56732531 is 13523765.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13523765 = 5 ⋅2704753.

It is a cyclic number.

It is not a de Polignac number, because 56732531 - 2² = 56732527 is a prime.

It is a super-2 number, since 2×56732531² = 6437160147331922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56732591) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21695 + ... + 24168.

It is an arithmetic number, because the mean of its divisors is an integer number (14194908).

Almost surely, 2^56732531 is an apocalyptic number.

56732531 is a deficient number, since it is larger than the sum of its proper divisors (47101).

56732531 is a wasteful number, since it uses less digits than its factorization.

56732531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47100.

The product of its digits is 18900, while the sum is 32.

The square root of 56732531 is about 7532.1000391657. The cubic root of 56732531 is about 384.2472072675.

The spelling of 56732531 in words is "fifty-six million, seven hundred thirty-two thousand, five hundred thirty-one".