257163 has 8 divisors (see below), whose sum is σ = 357888. Its totient is φ = 163944.

The previous prime is 257161. The next prime is 257171. The reversal of 257163 is 361752.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 257163 - 2¹ = 257161 is a prime.

It is a super-2 number, since 2×257163² = 132265617138, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (257161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1795 + ... + 1932.

It is an arithmetic number, because the mean of its divisors is an integer number (44736).

2²⁵⁷¹⁶³ is an apocalyptic number.

257163 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

257163 is a deficient number, since it is larger than the sum of its proper divisors (100725).

257163 is a wasteful number, since it uses less digits than its factorization.

257163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3753.

The product of its digits is 1260, while the sum is 24.

The square root of 257163 is about 507.1124135732. The cubic root of 257163 is about 63.5920503493.

The spelling of 257163 in words is "two hundred fifty-seven thousand, one hundred sixty-three".