257118 has 8 divisors (see below), whose sum is σ = 514248. Its totient is φ = 85704.

The previous prime is 257107. The next prime is 257123. The reversal of 257118 is 811752.

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

257118 is an admirable number.

It is a super-2 number, since 2×257118² = 132219331848, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

257118 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21421 + ... + 21432.

It is an arithmetic number, because the mean of its divisors is an integer number (64281).

2²⁵⁷¹¹⁸ is an apocalyptic number.

257118 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

257118 is a wasteful number, since it uses less digits than its factorization.

257118 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42858.

The product of its digits is 560, while the sum is 24.

The square root of 257118 is about 507.0680427714. The cubic root of 257118 is about 63.5883408872.

The spelling of 257118 in words is "two hundred fifty-seven thousand, one hundred eighteen".