257450 has 24 divisors (see below), whose sum is σ = 505920. Its totient is φ = 97200.

The previous prime is 257447. The next prime is 257459. The reversal of 257450 is 54752.

It is an Ulam number.

It is a nialpdrome in base 8.

It is not an unprimeable number, because it can be changed into a prime (257459) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 815 + ... + 1085.

It is an arithmetic number, because the mean of its divisors is an integer number (21080).

2²⁵⁷⁴⁵⁰ is an apocalyptic number.

257450 is a deficient number, since it is larger than the sum of its proper divisors (248470).

257450 is a wasteful number, since it uses less digits than its factorization.

257450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 302 (or 297 counting only the distinct ones).

The product of its (nonzero) digits is 1400, while the sum is 23.

The square root of 257450 is about 507.3953093989. The cubic root of 257450 is about 63.6156982991.

It can be divided in two parts, 257 and 450, that added together give a palindrome (707).

The spelling of 257450 in words is "two hundred fifty-seven thousand, four hundred fifty".