56500331387 has 4 divisors (see below), whose sum is σ = 56812488096. Its totient is φ = 56188174680.

The previous prime is 56500331353. The next prime is 56500331389. The reversal of 56500331387 is 78313300565.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 56500331387 - 2⁸ = 56500331131 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56500331389) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 156078083 + ... + 156078444.

It is an arithmetic number, because the mean of its divisors is an integer number (14203122024).

Almost surely, 2^56500331387 is an apocalyptic number.

56500331387 is a deficient number, since it is larger than the sum of its proper divisors (312156709).

56500331387 is a wasteful number, since it uses less digits than its factorization.

56500331387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 312156708.

The product of its (nonzero) digits is 226800, while the sum is 41.

The spelling of 56500331387 in words is "fifty-six billion, five hundred million, three hundred thirty-one thousand, three hundred eighty-seven".