257090359 has 2 divisors, whose sum is σ = 257090360. Its totient is φ = 257090358.

The previous prime is 257090341. The next prime is 257090363. The reversal of 257090359 is 953090752.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 257090359 - 2¹³ = 257082167 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (257090399) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128545179 + 128545180.

It is an arithmetic number, because the mean of its divisors is an integer number (128545180).

Almost surely, 2^257090359 is an apocalyptic number.

257090359 is a deficient number, since it is larger than the sum of its proper divisors (1).

257090359 is an equidigital number, since it uses as much as digits as its factorization.

257090359 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 85050, while the sum is 40.

The square root of 257090359 is about 16034.0375139888. The cubic root of 257090359 is about 635.8606215613.

It can be divided in two parts, 2570 and 90359, that added together give a palindrome (92929).

The spelling of 257090359 in words is "two hundred fifty-seven million, ninety thousand, three hundred fifty-nine".