257714797 has 2 divisors, whose sum is σ = 257714798. Its totient is φ = 257714796.

The previous prime is 257714777. The next prime is 257714833. The reversal of 257714797 is 797417752.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 171243396 + 86471401 = 13086^2 + 9299^2 .

It is a cyclic number.

It is not a de Polignac number, because 257714797 - 2²⁷ = 123497069 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 257714797.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (257714777) 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, 128857398 + 128857399.

It is an arithmetic number, because the mean of its divisors is an integer number (128857399).

Almost surely, 2^257714797 is an apocalyptic number.

It is an amenable number.

257714797 is a deficient number, since it is larger than the sum of its proper divisors (1).

257714797 is an equidigital number, since it uses as much as digits as its factorization.

257714797 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 864360, while the sum is 49.

The square root of 257714797 is about 16053.4979677328. The cubic root of 257714797 is about 636.3750120459.

The spelling of 257714797 in words is "two hundred fifty-seven million, seven hundred fourteen thousand, seven hundred ninety-seven".