257453297 has 2 divisors, whose sum is σ = 257453298. Its totient is φ = 257453296.

The previous prime is 257453291. The next prime is 257453303. The reversal of 257453297 is 792354752.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (257453291) and next prime (257453303).

It can be written as a sum of positive squares in only one way, i.e., 187580416 + 69872881 = 13696^2 + 8359^2 .

It is a cyclic number.

It is not a de Polignac number, because 257453297 - 2¹² = 257449201 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (257453291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128726648 + 128726649.

It is an arithmetic number, because the mean of its divisors is an integer number (128726649).

Almost surely, 2^257453297 is an apocalyptic number.

It is an amenable number.

257453297 is a deficient number, since it is larger than the sum of its proper divisors (1).

257453297 is an equidigital number, since it uses as much as digits as its factorization.

257453297 is an evil number, because the sum of its binary digits is even.

The product of its digits is 529200, while the sum is 44.

The square root of 257453297 is about 16045.3512582305. The cubic root of 257453297 is about 636.1596986002.

The spelling of 257453297 in words is "two hundred fifty-seven million, four hundred fifty-three thousand, two hundred ninety-seven".