56943857 has 2 divisors, whose sum is σ = 56943858. Its totient is φ = 56943856.

The previous prime is 56943853. The next prime is 56943871. The reversal of 56943857 is 75834965.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 49014001 + 7929856 = 7001^2 + 2816^2 .

It is a cyclic number.

It is not a de Polignac number, because 56943857 - 2² = 56943853 is a prime.

It is not a weakly prime, because it can be changed into another prime (56943853) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28471928 + 28471929.

It is an arithmetic number, because the mean of its divisors is an integer number (28471929).

Almost surely, 2^56943857 is an apocalyptic number.

It is an amenable number.

56943857 is a deficient number, since it is larger than the sum of its proper divisors (1).

56943857 is an equidigital number, since it uses as much as digits as its factorization.

56943857 is an evil number, because the sum of its binary digits is even.

The product of its digits is 907200, while the sum is 47.

The square root of 56943857 is about 7546.1153582489. The cubic root of 56943857 is about 384.7237170007.

The spelling of 56943857 in words is "fifty-six million, nine hundred forty-three thousand, eight hundred fifty-seven".