56378831 has 2 divisors, whose sum is σ = 56378832. Its totient is φ = 56378830.

The previous prime is 56378809. The next prime is 56378887. The reversal of 56378831 is 13887365.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56378831 is a prime.

It is a super-2 number, since 2×56378831² = 6357145169853122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56378431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28189415 + 28189416.

It is an arithmetic number, because the mean of its divisors is an integer number (28189416).

Almost surely, 2^56378831 is an apocalyptic number.

56378831 is a deficient number, since it is larger than the sum of its proper divisors (1).

56378831 is an equidigital number, since it uses as much as digits as its factorization.

56378831 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 120960, while the sum is 41.

The square root of 56378831 is about 7508.5838212009. The cubic root of 56378831 is about 383.4470099324.

The spelling of 56378831 in words is "fifty-six million, three hundred seventy-eight thousand, eight hundred thirty-one".