257714491 has 2 divisors, whose sum is σ = 257714492. Its totient is φ = 257714490.

The previous prime is 257714473. The next prime is 257714507. The reversal of 257714491 is 194417752.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 257714491 - 2⁹ = 257713979 is a prime.

It is not a weakly prime, because it can be changed into another prime (257714591) 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, 128857245 + 128857246.

It is an arithmetic number, because the mean of its divisors is an integer number (128857246).

Almost surely, 2^257714491 is an apocalyptic number.

257714491 is a deficient number, since it is larger than the sum of its proper divisors (1).

257714491 is an equidigital number, since it uses as much as digits as its factorization.

257714491 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 70560, while the sum is 40.

The square root of 257714491 is about 16053.4884370968. The cubic root of 257714491 is about 636.3747601772.

The spelling of 257714491 in words is "two hundred fifty-seven million, seven hundred fourteen thousand, four hundred ninety-one".