56928857 has 2 divisors, whose sum is σ = 56928858. Its totient is φ = 56928856.

The previous prime is 56928853. The next prime is 56928881. The reversal of 56928857 is 75882965.

56928857 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., 44368921 + 12559936 = 6661^2 + 3544^2 .

It is a cyclic number.

It is not a de Polignac number, because 56928857 - 2² = 56928853 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (56928853) 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, 28464428 + 28464429.

It is an arithmetic number, because the mean of its divisors is an integer number (28464429).

Almost surely, 2^56928857 is an apocalyptic number.

It is an amenable number.

56928857 is a deficient number, since it is larger than the sum of its proper divisors (1).

56928857 is an equidigital number, since it uses as much as digits as its factorization.

56928857 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1209600, while the sum is 50.

The square root of 56928857 is about 7545.1214039272. The cubic root of 56928857 is about 384.6899330666.

The spelling of 56928857 in words is "fifty-six million, nine hundred twenty-eight thousand, eight hundred fifty-seven".