257319199 has 2 divisors, whose sum is σ = 257319200. Its totient is φ = 257319198.

The previous prime is 257319169. The next prime is 257319217. The reversal of 257319199 is 991913752.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 257319199 - 2¹³ = 257311007 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (257319149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128659599 + 128659600.

It is an arithmetic number, because the mean of its divisors is an integer number (128659600).

Almost surely, 2^257319199 is an apocalyptic number.

257319199 is a deficient number, since it is larger than the sum of its proper divisors (1).

257319199 is an equidigital number, since it uses as much as digits as its factorization.

257319199 is an evil number, because the sum of its binary digits is even.

The product of its digits is 153090, while the sum is 46.

The square root of 257319199 is about 16041.1719958362. The cubic root of 257319199 is about 636.0492286499.

The spelling of 257319199 in words is "two hundred fifty-seven million, three hundred nineteen thousand, one hundred ninety-nine".