56392261 has 4 divisors (see below), whose sum is σ = 57767724. Its totient is φ = 55016800.

The previous prime is 56392253. The next prime is 56392267. The reversal of 56392261 is 16229365.

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

It can be written as a sum of positive squares in 2 ways, for example, as 5712100 + 50680161 = 2390^2 + 7119^2 .

It is a cyclic number.

It is not a de Polignac number, because 56392261 - 2³ = 56392253 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56392267) 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, 687670 + ... + 687751.

It is an arithmetic number, because the mean of its divisors is an integer number (14441931).

Almost surely, 2^56392261 is an apocalyptic number.

It is an amenable number.

56392261 is a deficient number, since it is larger than the sum of its proper divisors (1375463).

56392261 is a wasteful number, since it uses less digits than its factorization.

56392261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1375462.

The product of its digits is 19440, while the sum is 34.

The square root of 56392261 is about 7509.4780777362. The cubic root of 56392261 is about 383.4774544829.

The spelling of 56392261 in words is "fifty-six million, three hundred ninety-two thousand, two hundred sixty-one".