56931243 has 4 divisors (see below), whose sum is σ = 75908328. Its totient is φ = 37954160.

The previous prime is 56931229. The next prime is 56931289. The reversal of 56931243 is 34213965.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 56931243 - 2¹⁸ = 56669099 is a prime.

It is not an unprimeable number, because it can be changed into a prime (56931223) 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, 9488538 + ... + 9488543.

It is an arithmetic number, because the mean of its divisors is an integer number (18977082).

Almost surely, 2^56931243 is an apocalyptic number.

56931243 is a deficient number, since it is larger than the sum of its proper divisors (18977085).

56931243 is a wasteful number, since it uses less digits than its factorization.

56931243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18977084.

The product of its digits is 19440, while the sum is 33.

The square root of 56931243 is about 7545.2795176852. The cubic root of 56931243 is about 384.6953073612.

The spelling of 56931243 in words is "fifty-six million, nine hundred thirty-one thousand, two hundred forty-three".