257031053 has 2 divisors, whose sum is σ = 257031054. Its totient is φ = 257031052.

The previous prime is 257031017. The next prime is 257031059. The reversal of 257031053 is 350130752.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 249703204 + 7327849 = 15802^2 + 2707^2 .

It is a cyclic number.

It is not a de Polignac number, because 257031053 - 2⁶ = 257030989 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (257031059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128515526 + 128515527.

It is an arithmetic number, because the mean of its divisors is an integer number (128515527).

Almost surely, 2^257031053 is an apocalyptic number.

It is an amenable number.

257031053 is a deficient number, since it is larger than the sum of its proper divisors (1).

257031053 is an equidigital number, since it uses as much as digits as its factorization.

257031053 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3150, while the sum is 26.

The square root of 257031053 is about 16032.1880290870. The cubic root of 257031053 is about 635.8117240320.

The spelling of 257031053 in words is "two hundred fifty-seven million, thirty-one thousand, fifty-three".