56624890 has 24 divisors (see below), whose sum is σ = 118566612. Its totient is φ = 19414080.

The previous prime is 56624861. The next prime is 56624891. The reversal of 56624890 is 9842665.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 48902049 + 7722841 = 6993^2 + 2779^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (56624891) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 57291 + ... + 58270.

Almost surely, 2^56624890 is an apocalyptic number.

56624890 is an abundant number, since it is smaller than the sum of its proper divisors (61941722).

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

56624890 is a wasteful number, since it uses less digits than its factorization.

56624890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115582 (or 115575 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 40.

The square root of 56624890 is about 7524.9511626322. The cubic root of 56624890 is about 384.0040373201.

The spelling of 56624890 in words is "fifty-six million, six hundred twenty-four thousand, eight hundred ninety".