56866431 has 8 divisors (see below), whose sum is σ = 78267904. Its totient is φ = 36687960.

The previous prime is 56866423. The next prime is 56866483. The reversal of 56866431 is 13466865.

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

It is not a de Polignac number, because 56866431 - 2³ = 56866423 is a prime.

It is a super-2 number, since 2×56866431² = 6467581949355522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 56866431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56868431) 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, 305641 + ... + 305826.

It is an arithmetic number, because the mean of its divisors is an integer number (9783488).

Almost surely, 2^56866431 is an apocalyptic number.

56866431 is a deficient number, since it is larger than the sum of its proper divisors (21401473).

56866431 is a wasteful number, since it uses less digits than its factorization.

56866431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 611501.

The product of its digits is 103680, while the sum is 39.

The square root of 56866431 is about 7540.9834239309. The cubic root of 56866431 is about 384.5492695658.

The spelling of 56866431 in words is "fifty-six million, eight hundred sixty-six thousand, four hundred thirty-one".