56181863 has 2 divisors, whose sum is σ = 56181864. Its totient is φ = 56181862.

The previous prime is 56181859. The next prime is 56181883. The reversal of 56181863 is 36818165.

It is a happy number.

56181863 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 is a cyclic number.

It is not a de Polignac number, because 56181863 - 2² = 56181859 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56181883) 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, 28090931 + 28090932.

It is an arithmetic number, because the mean of its divisors is an integer number (28090932).

Almost surely, 2^56181863 is an apocalyptic number.

56181863 is a deficient number, since it is larger than the sum of its proper divisors (1).

56181863 is an equidigital number, since it uses as much as digits as its factorization.

56181863 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 34560, while the sum is 38.

The square root of 56181863 is about 7495.4561568993. The cubic root of 56181863 is about 382.9999454628. Note that the first 4 decimals are identical.

The spelling of 56181863 in words is "fifty-six million, one hundred eighty-one thousand, eight hundred sixty-three".