56311385 has 8 divisors (see below), whose sum is σ = 72771720. Its totient is φ = 41583744.

The previous prime is 56311363. The next prime is 56311399. The reversal of 56311385 is 58311365.

It can be written as a sum of positive squares in 4 ways, for example, as 8133904 + 48177481 = 2852^2 + 6941^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 56311385 - 2¹⁸ = 56049241 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 433100 + ... + 433229.

It is an arithmetic number, because the mean of its divisors is an integer number (9096465).

Almost surely, 2^56311385 is an apocalyptic number.

It is an amenable number.

56311385 is a deficient number, since it is larger than the sum of its proper divisors (16460335).

56311385 is a wasteful number, since it uses less digits than its factorization.

56311385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 866347.

The product of its digits is 10800, while the sum is 32.

The square root of 56311385 is about 7504.0912174626. The cubic root of 56311385 is about 383.2940430220.

The spelling of 56311385 in words is "fifty-six million, three hundred eleven thousand, three hundred eighty-five".