56658013 has 4 divisors (see below), whose sum is σ = 56673468. Its totient is φ = 56642560.

The previous prime is 56657977. The next prime is 56658029. The reversal of 56658013 is 31085665.

56658013 = 5322² + 5323².

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 28334329 + 28323684 = 5323^2 + 5322^2 .

It is a cyclic number.

It is not a de Polignac number, because 56658013 - 2¹⁷ = 56526941 is a prime.

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 56658013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56653013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1245 + ... + 10717.

It is an arithmetic number, because the mean of its divisors is an integer number (14168367).

Almost surely, 2^56658013 is an apocalyptic number.

56658013 is the 5323-rd centered square number.

It is an amenable number.

56658013 is a deficient number, since it is larger than the sum of its proper divisors (15455).

56658013 is an equidigital number, since it uses as much as digits as its factorization.

56658013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15454.

The product of its (nonzero) digits is 21600, while the sum is 34.

The square root of 56658013 is about 7527.1517189439. The cubic root of 56658013 is about 384.0788977242.

The spelling of 56658013 in words is "fifty-six million, six hundred fifty-eight thousand, thirteen".