257094631 has 2 divisors, whose sum is σ = 257094632. Its totient is φ = 257094630.

The previous prime is 257094613. The next prime is 257094637. The reversal of 257094631 is 136490752.

Together with previous prime (257094613) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 257094631 - 2¹⁵ = 257061863 is a prime.

It is a super-2 number, since 2×257094631² = 132195298578052322, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (257094637) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128547315 + 128547316.

It is an arithmetic number, because the mean of its divisors is an integer number (128547316).

Almost surely, 2^257094631 is an apocalyptic number.

257094631 is a deficient number, since it is larger than the sum of its proper divisors (1).

257094631 is an equidigital number, since it uses as much as digits as its factorization.

257094631 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 45360, while the sum is 37.

The square root of 257094631 is about 16034.1707300378. The cubic root of 257094631 is about 635.8641435157.

The spelling of 257094631 in words is "two hundred fifty-seven million, ninety-four thousand, six hundred thirty-one".