56388387 has 16 divisors (see below), whose sum is σ = 85586688. Its totient is φ = 32688480.

The previous prime is 56388379. The next prime is 56388427. The reversal of 56388387 is 78388365.

It is a happy number.

It is not a de Polignac number, because 56388387 - 2³ = 56388379 is a prime.

It is not an unprimeable number, because it can be changed into a prime (56388347) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36388 + ... + 37905.

It is an arithmetic number, because the mean of its divisors is an integer number (5349168).

Almost surely, 2^56388387 is an apocalyptic number.

56388387 is a deficient number, since it is larger than the sum of its proper divisors (29198301).

56388387 is a wasteful number, since it uses less digits than its factorization.

56388387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74330.

The product of its digits is 967680, while the sum is 48.

The square root of 56388387 is about 7509.2201326103. The cubic root of 56388387 is about 383.4686729843.

The spelling of 56388387 in words is "fifty-six million, three hundred eighty-eight thousand, three hundred eighty-seven".