56431437 has 16 divisors (see below), whose sum is σ = 77225280. Its totient is φ = 36634752.

The previous prime is 56431433. The next prime is 56431499. The reversal of 56431437 is 73413465.

It is not a de Polignac number, because 56431437 - 2² = 56431433 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 56431398 and 56431407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56431433) 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, 79239 + ... + 79947.

It is an arithmetic number, because the mean of its divisors is an integer number (4826580).

Almost surely, 2^56431437 is an apocalyptic number.

It is an amenable number.

56431437 is a deficient number, since it is larger than the sum of its proper divisors (20793843).

56431437 is a wasteful number, since it uses less digits than its factorization.

56431437 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1372.

The product of its digits is 30240, while the sum is 33.

The square root of 56431437 is about 7512.0860618073. The cubic root of 56431437 is about 383.5662351947.

The spelling of 56431437 in words is "fifty-six million, four hundred thirty-one thousand, four hundred thirty-seven".