56433687 has 4 divisors (see below), whose sum is σ = 75244920. Its totient is φ = 37622456.

The previous prime is 56433679. The next prime is 56433691. The reversal of 56433687 is 78633465.

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 56433687 - 2³ = 56433679 is a prime.

It is a super-2 number, since 2×56433687² = 6369522056827938, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56433617) 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, 9405612 + ... + 9405617.

It is an arithmetic number, because the mean of its divisors is an integer number (18811230).

Almost surely, 2^56433687 is an apocalyptic number.

56433687 is a deficient number, since it is larger than the sum of its proper divisors (18811233).

56433687 is a wasteful number, since it uses less digits than its factorization.

56433687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18811232.

The product of its digits is 362880, while the sum is 42.

The square root of 56433687 is about 7512.2358189823. The cubic root of 56433687 is about 383.5713329003.

The spelling of 56433687 in words is "fifty-six million, four hundred thirty-three thousand, six hundred eighty-seven".