257063497 has 2 divisors, whose sum is σ = 257063498. Its totient is φ = 257063496.

The previous prime is 257063467. The next prime is 257063507. The reversal of 257063497 is 794360752.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 139145616 + 117917881 = 11796^2 + 10859^2 .

It is a cyclic number.

It is not a de Polignac number, because 257063497 - 2¹⁹ = 256539209 is a prime.

It is not a weakly prime, because it can be changed into another prime (257063467) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128531748 + 128531749.

It is an arithmetic number, because the mean of its divisors is an integer number (128531749).

Almost surely, 2^257063497 is an apocalyptic number.

It is an amenable number.

257063497 is a deficient number, since it is larger than the sum of its proper divisors (1).

257063497 is an equidigital number, since it uses as much as digits as its factorization.

257063497 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 317520, while the sum is 43.

The square root of 257063497 is about 16033.1998365891. The cubic root of 257063497 is about 635.8384748953.

The spelling of 257063497 in words is "two hundred fifty-seven million, sixty-three thousand, four hundred ninety-seven".