257350863 has 32 divisors (see below), whose sum is σ = 430732800. Its totient is φ = 132773760.

The previous prime is 257350837. The next prime is 257350889. The reversal of 257350863 is 368053752.

It is an interprime number because it is at equal distance from previous prime (257350837) and next prime (257350889).

It is not a de Polignac number, because 257350863 - 2¹² = 257346767 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (257350813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 30681 + ... + 38157.

It is an arithmetic number, because the mean of its divisors is an integer number (13460400).

Almost surely, 2^257350863 is an apocalyptic number.

257350863 is a deficient number, since it is larger than the sum of its proper divisors (173381937).

257350863 is a wasteful number, since it uses less digits than its factorization.

257350863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7647.

The product of its (nonzero) digits is 151200, while the sum is 39.

The square root of 257350863 is about 16042.1589257805. The cubic root of 257350863 is about 636.0753169180.

The spelling of 257350863 in words is "two hundred fifty-seven million, three hundred fifty thousand, eight hundred sixty-three".