57869257 has 2 divisors, whose sum is σ = 57869258. Its totient is φ = 57869256.

The previous prime is 57869249. The next prime is 57869261. The reversal of 57869257 is 75296875.

57869257 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 55711296 + 2157961 = 7464^2 + 1469^2 .

It is a cyclic number.

It is not a de Polignac number, because 57869257 - 2³ = 57869249 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 57869257.

It is not a weakly prime, because it can be changed into another prime (57869657) 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, 28934628 + 28934629.

It is an arithmetic number, because the mean of its divisors is an integer number (28934629).

Almost surely, 2^57869257 is an apocalyptic number.

It is an amenable number.

57869257 is a deficient number, since it is larger than the sum of its proper divisors (1).

57869257 is an equidigital number, since it uses as much as digits as its factorization.

57869257 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1058400, while the sum is 49.

The square root of 57869257 is about 7607.1845646073. The cubic root of 57869257 is about 386.7965889042.

The spelling of 57869257 in words is "fifty-seven million, eight hundred sixty-nine thousand, two hundred fifty-seven".