56288815 has 16 divisors (see below), whose sum is σ = 74424096. Its totient is φ = 40528000.

The previous prime is 56288807. The next prime is 56288821. The reversal of 56288815 is 51888265.

It is not a de Polignac number, because 56288815 - 2³ = 56288807 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 489 + ... + 10621.

It is an arithmetic number, because the mean of its divisors is an integer number (4651506).

Almost surely, 2^56288815 is an apocalyptic number.

56288815 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

56288815 is a deficient number, since it is larger than the sum of its proper divisors (18135281).

56288815 is a wasteful number, since it uses less digits than its factorization.

56288815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10250.

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

The square root of 56288815 is about 7502.5872204194. The cubic root of 56288815 is about 383.2428271941.

The spelling of 56288815 in words is "fifty-six million, two hundred eighty-eight thousand, eight hundred fifteen".