57938857 has 2 divisors, whose sum is σ = 57938858. Its totient is φ = 57938856.

The previous prime is 57938849. The next prime is 57938869. The reversal of 57938857 is 75883975.

57938857 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., 47596201 + 10342656 = 6899^2 + 3216^2 .

It is a cyclic number.

It is not a de Polignac number, because 57938857 - 2³ = 57938849 is a prime.

It is a super-2 number, since 2×57938857² = 6713822300932898, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (57938887) 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, 28969428 + 28969429.

It is an arithmetic number, because the mean of its divisors is an integer number (28969429).

Almost surely, 2^57938857 is an apocalyptic number.

It is an amenable number.

57938857 is a deficient number, since it is larger than the sum of its proper divisors (1).

57938857 is an equidigital number, since it uses as much as digits as its factorization.

57938857 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2116800, while the sum is 52.

The square root of 57938857 is about 7611.7578127526. The cubic root of 57938857 is about 386.9515949670.

The spelling of 57938857 in words is "fifty-seven million, nine hundred thirty-eight thousand, eight hundred fifty-seven".