56981927 has 2 divisors, whose sum is σ = 56981928. Its totient is φ = 56981926.

The previous prime is 56981917. The next prime is 56981941. The reversal of 56981927 is 72918965.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 56981927 - 2¹⁴ = 56965543 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56981917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28490963 + 28490964.

It is an arithmetic number, because the mean of its divisors is an integer number (28490964).

Almost surely, 2^56981927 is an apocalyptic number.

56981927 is a deficient number, since it is larger than the sum of its proper divisors (1).

56981927 is an equidigital number, since it uses as much as digits as its factorization.

56981927 is an evil number, because the sum of its binary digits is even.

The product of its digits is 272160, while the sum is 47.

The square root of 56981927 is about 7548.6374267148. The cubic root of 56981927 is about 384.8094339970.

The spelling of 56981927 in words is "fifty-six million, nine hundred eighty-one thousand, nine hundred twenty-seven".