56380013 has 2 divisors, whose sum is σ = 56380014. Its totient is φ = 56380012.

The previous prime is 56380003. The next prime is 56380033. The reversal of 56380013 is 31008365.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 56355049 + 24964 = 7507^2 + 158^2 .

It is a cyclic number.

It is not a de Polignac number, because 56380013 - 2⁴ = 56379997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56380003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28190006 + 28190007.

It is an arithmetic number, because the mean of its divisors is an integer number (28190007).

Almost surely, 2^56380013 is an apocalyptic number.

It is an amenable number.

56380013 is a deficient number, since it is larger than the sum of its proper divisors (1).

56380013 is an equidigital number, since it uses as much as digits as its factorization.

56380013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 56380013 is about 7508.6625307041. The cubic root of 56380013 is about 383.4496896096.

Adding to 56380013 its reverse (31008365), we get a palindrome (87388378).

The spelling of 56380013 in words is "fifty-six million, three hundred eighty thousand, thirteen".