257888063 has 2 divisors, whose sum is σ = 257888064. Its totient is φ = 257888062.

The previous prime is 257888027. The next prime is 257888077. The reversal of 257888063 is 360888752.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-257888063 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 257887999 and 257888017.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (257888003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128944031 + 128944032.

It is an arithmetic number, because the mean of its divisors is an integer number (128944032).

Almost surely, 2^257888063 is an apocalyptic number.

257888063 is a deficient number, since it is larger than the sum of its proper divisors (1).

257888063 is an equidigital number, since it uses as much as digits as its factorization.

257888063 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 645120, while the sum is 47.

The square root of 257888063 is about 16058.8935795714. The cubic root of 257888063 is about 636.5175953110.

The spelling of 257888063 in words is "two hundred fifty-seven million, eight hundred eighty-eight thousand, sixty-three".