56881679 has 2 divisors, whose sum is σ = 56881680. Its totient is φ = 56881678.

The previous prime is 56881663. The next prime is 56881681. The reversal of 56881679 is 97618865.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 56881679 - 2⁴ = 56881663 is a prime.

Together with 56881681, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56883679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28440839 + 28440840.

It is an arithmetic number, because the mean of its divisors is an integer number (28440840).

Almost surely, 2^56881679 is an apocalyptic number.

56881679 is a deficient number, since it is larger than the sum of its proper divisors (1).

56881679 is an equidigital number, since it uses as much as digits as its factorization.

56881679 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 725760, while the sum is 50.

The square root of 56881679 is about 7541.9943648878. The cubic root of 56881679 is about 384.5836371364.

The spelling of 56881679 in words is "fifty-six million, eight hundred eighty-one thousand, six hundred seventy-nine".