257039327 has 2 divisors, whose sum is σ = 257039328. Its totient is φ = 257039326.

The previous prime is 257039317. The next prime is 257039357. The reversal of 257039327 is 723930752.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 257039327 - 2⁸ = 257039071 is a prime.

It is a super-2 number, since 2×257039327² = 132138431249225858, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (257039317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128519663 + 128519664.

It is an arithmetic number, because the mean of its divisors is an integer number (128519664).

Almost surely, 2^257039327 is an apocalyptic number.

257039327 is a deficient number, since it is larger than the sum of its proper divisors (1).

257039327 is an equidigital number, since it uses as much as digits as its factorization.

257039327 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 79380, while the sum is 38.

The square root of 257039327 is about 16032.4460703911. The cubic root of 257039327 is about 635.8185463591.

The spelling of 257039327 in words is "two hundred fifty-seven million, thirty-nine thousand, three hundred twenty-seven".