56158431 has 16 divisors (see below), whose sum is σ = 85876224. Its totient is φ = 31977504.

The previous prime is 56158423. The next prime is 56158451. The reversal of 56158431 is 13485165.

It is not a de Polignac number, because 56158431 - 2³ = 56158423 is a prime.

It is a super-2 number, since 2×56158431² = 6307538744763522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 56158392 and 56158401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56158451) 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, 1590 + ... + 10716.

It is an arithmetic number, because the mean of its divisors is an integer number (5367264).

Almost surely, 2^56158431 is an apocalyptic number.

56158431 is a deficient number, since it is larger than the sum of its proper divisors (29717793).

56158431 is a wasteful number, since it uses less digits than its factorization.

56158431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9430.

The product of its digits is 14400, while the sum is 33.

The square root of 56158431 is about 7493.8929135664. The cubic root of 56158431 is about 382.9466916059.

The spelling of 56158431 in words is "fifty-six million, one hundred fifty-eight thousand, four hundred thirty-one".