56459881 has 2 divisors, whose sum is σ = 56459882. Its totient is φ = 56459880.

The previous prime is 56459863. The next prime is 56459933. The reversal of 56459881 is 18895465.

56459881 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 50979600 + 5480281 = 7140^2 + 2341^2 .

It is a cyclic number.

It is not a de Polignac number, because 56459881 - 2¹⁷ = 56328809 is a prime.

It is a super-2 number, since 2×56459881² = 6375436325068322, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (56459801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28229940 + 28229941.

It is an arithmetic number, because the mean of its divisors is an integer number (28229941).

Almost surely, 2^56459881 is an apocalyptic number.

It is an amenable number.

56459881 is a deficient number, since it is larger than the sum of its proper divisors (1).

56459881 is an equidigital number, since it uses as much as digits as its factorization.

56459881 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 345600, while the sum is 46.

The square root of 56459881 is about 7513.9790390977. The cubic root of 56459881 is about 383.6306692881.

The spelling of 56459881 in words is "fifty-six million, four hundred fifty-nine thousand, eight hundred eighty-one".