56815288 has 16 divisors (see below), whose sum is σ = 107525880. Its totient is φ = 28141728.

The previous prime is 56815273. The next prime is 56815303. The reversal of 56815288 is 88251865.

It is an interprime number because it is at equal distance from previous prime (56815273) and next prime (56815303).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32331 + ... + 34042.

Almost surely, 2^56815288 is an apocalyptic number.

It is an amenable number.

56815288 is a deficient number, since it is larger than the sum of its proper divisors (50710592).

56815288 is a wasteful number, since it uses less digits than its factorization.

56815288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66486 (or 66482 counting only the distinct ones).

The product of its digits is 153600, while the sum is 43.

The square root of 56815288 is about 7537.5916578175. The cubic root of 56815288 is about 384.4339531319.

The spelling of 56815288 in words is "fifty-six million, eight hundred fifteen thousand, two hundred eighty-eight".