56931261 has 8 divisors (see below), whose sum is σ = 76418400. Its totient is φ = 37699152.

The previous prime is 56931229. The next prime is 56931289. The reversal of 56931261 is 16213965.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 56931261 - 2⁵ = 56931229 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56931661) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63235 + ... + 64128.

It is an arithmetic number, because the mean of its divisors is an integer number (9552300).

Almost surely, 2^56931261 is an apocalyptic number.

It is an amenable number.

56931261 is a deficient number, since it is larger than the sum of its proper divisors (19487139).

56931261 is a wasteful number, since it uses less digits than its factorization.

56931261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127515.

The product of its digits is 9720, while the sum is 33.

The square root of 56931261 is about 7545.2807104839. The cubic root of 56931261 is about 384.6953479044.

The spelling of 56931261 in words is "fifty-six million, nine hundred thirty-one thousand, two hundred sixty-one".