56179640 has 32 divisors (see below), whose sum is σ = 137896560. Its totient is φ = 20428800.

The previous prime is 56179631. The next prime is 56179649. The reversal of 56179640 is 4697165.

It is an interprime number because it is at equal distance from previous prime (56179631) and next prime (56179649).

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 56179594 and 56179603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56179649) 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, 63401 + ... + 64280.

Almost surely, 2^56179640 is an apocalyptic number.

It is an amenable number.

56179640 is an abundant number, since it is smaller than the sum of its proper divisors (81716920).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

56179640 is a wasteful number, since it uses less digits than its factorization.

56179640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127703 (or 127699 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 38.

The square root of 56179640 is about 7495.3078655916. The cubic root of 56179640 is about 382.9948938913.

The spelling of 56179640 in words is "fifty-six million, one hundred seventy-nine thousand, six hundred forty".