257475373 has 2 divisors, whose sum is σ = 257475374. Its totient is φ = 257475372.

The previous prime is 257475371. The next prime is 257475377. The reversal of 257475373 is 373574752.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 214271044 + 43204329 = 14638^2 + 6573^2 .

It is a cyclic number.

It is not a de Polignac number, because 257475373 - 2¹ = 257475371 is a prime.

Together with 257475371, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (257475371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128737686 + 128737687.

It is an arithmetic number, because the mean of its divisors is an integer number (128737687).

Almost surely, 2^257475373 is an apocalyptic number.

It is an amenable number.

257475373 is a deficient number, since it is larger than the sum of its proper divisors (1).

257475373 is an equidigital number, since it uses as much as digits as its factorization.

257475373 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 617400, while the sum is 43.

The square root of 257475373 is about 16046.0391685924. The cubic root of 257475373 is about 636.1778811344.

The spelling of 257475373 in words is "two hundred fifty-seven million, four hundred seventy-five thousand, three hundred seventy-three".