56711320 has 32 divisors (see below), whose sum is σ = 135108000. Its totient is φ = 21349888.

The previous prime is 56711311. The next prime is 56711329. The reversal of 56711320 is 2311765.

It is an interprime number because it is at equal distance from previous prime (56711311) and next prime (56711329).

It is a super-2 number, since 2×56711320² = 6432347632284800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56711329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41020 + ... + 42379.

It is an arithmetic number, because the mean of its divisors is an integer number (4222125).

Almost surely, 2^56711320 is an apocalyptic number.

It is an amenable number.

56711320 is an abundant number, since it is smaller than the sum of its proper divisors (78396680).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

56711320 is a wasteful number, since it uses less digits than its factorization.

56711320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83427 (or 83423 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 25.

The square root of 56711320 is about 7530.6918672855. The cubic root of 56711320 is about 384.1993142080.

The spelling of 56711320 in words is "fifty-six million, seven hundred eleven thousand, three hundred twenty".