56978427 has 16 divisors (see below), whose sum is σ = 83018880. Its totient is φ = 34473600.

The previous prime is 56978419. The next prime is 56978447. The reversal of 56978427 is 72487965.

It is not a de Polignac number, because 56978427 - 2³ = 56978419 is a prime.

It is a super-2 number, since 2×56978427² = 6493082286788658, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (56978447) 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, 25699 + ... + 27827.

It is an arithmetic number, because the mean of its divisors is an integer number (5188680).

Almost surely, 2^56978427 is an apocalyptic number.

56978427 is a deficient number, since it is larger than the sum of its proper divisors (26040453).

56978427 is a wasteful number, since it uses less digits than its factorization.

56978427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2954.

The product of its digits is 846720, while the sum is 48.

The square root of 56978427 is about 7548.4055932362. The cubic root of 56978427 is about 384.8015551211.

The spelling of 56978427 in words is "fifty-six million, nine hundred seventy-eight thousand, four hundred twenty-seven".