56732139 has 12 divisors (see below), whose sum is σ = 84590272. Its totient is φ = 36601200.

The previous prime is 56732129. The next prime is 56732153. The reversal of 56732139 is 93123765.

It is not a de Polignac number, because 56732139 - 2¹⁵ = 56699371 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56732129) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 101392 + ... + 101949.

Almost surely, 2^56732139 is an apocalyptic number.

56732139 is a deficient number, since it is larger than the sum of its proper divisors (27858133).

56732139 is a wasteful number, since it uses less digits than its factorization.

56732139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203378 (or 203375 counting only the distinct ones).

The product of its digits is 34020, while the sum is 36.

The square root of 56732139 is about 7532.0740171615. The cubic root of 56732139 is about 384.2463222653.

The spelling of 56732139 in words is "fifty-six million, seven hundred thirty-two thousand, one hundred thirty-nine".