56623431 has 8 divisors (see below), whose sum is σ = 77538544. Its totient is φ = 36728640.

The previous prime is 56623417. The next prime is 56623507. The reversal of 56623431 is 13432665.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 56623431 - 2⁶ = 56623367 is a prime.

It is a super-2 number, since 2×56623431² = 6412425876423522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56623031) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 254950 + ... + 255171.

It is an arithmetic number, because the mean of its divisors is an integer number (9692318).

Almost surely, 2^56623431 is an apocalyptic number.

56623431 is a deficient number, since it is larger than the sum of its proper divisors (20915113).

56623431 is a wasteful number, since it uses less digits than its factorization.

56623431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 510161.

The product of its digits is 12960, while the sum is 30.

The square root of 56623431 is about 7524.8542178570. The cubic root of 56623431 is about 384.0007392021. Note that the first 3 decimals are identical.

The spelling of 56623431 in words is "fifty-six million, six hundred twenty-three thousand, four hundred thirty-one".