56628513 has 12 divisors (see below), whose sum is σ = 86608548. Its totient is φ = 35531520.

The previous prime is 56628499. The next prime is 56628521. The reversal of 56628513 is 31582665.

56628513 is a `hidden beast` number, since 566 + 2 + 85 + 13 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 49956624 + 6671889 = 7068^2 + 2583^2 .

It is not a de Polignac number, because 56628513 - 2⁴ = 56628497 is a prime.

It is not an unprimeable number, because it can be changed into a prime (56626513) 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, 184908 + ... + 185213.

It is an arithmetic number, because the mean of its divisors is an integer number (7217379).

Almost surely, 2^56628513 is an apocalyptic number.

It is an amenable number.

56628513 is a deficient number, since it is larger than the sum of its proper divisors (29980035).

56628513 is a wasteful number, since it uses less digits than its factorization.

56628513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 370144 (or 370141 counting only the distinct ones).

The product of its digits is 43200, while the sum is 36.

The square root of 56628513 is about 7525.1918912410. The cubic root of 56628513 is about 384.0122269870.

The spelling of 56628513 in words is "fifty-six million, six hundred twenty-eight thousand, five hundred thirteen".