56431603 has 4 divisors (see below), whose sum is σ = 56579328. Its totient is φ = 56283880.

The previous prime is 56431601. The next prime is 56431657. The reversal of 56431603 is 30613465.

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 56431603 - 2¹ = 56431601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56431601) 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, 73288 + ... + 74053.

It is an arithmetic number, because the mean of its divisors is an integer number (14144832).

Almost surely, 2^56431603 is an apocalyptic number.

56431603 is a deficient number, since it is larger than the sum of its proper divisors (147725).

56431603 is a wasteful number, since it uses less digits than its factorization.

56431603 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147724.

The product of its (nonzero) digits is 6480, while the sum is 28.

The square root of 56431603 is about 7512.0971106609. The cubic root of 56431603 is about 383.5666112967.

The spelling of 56431603 in words is "fifty-six million, four hundred thirty-one thousand, six hundred three".