257283 has 16 divisors (see below), whose sum is σ = 411040. Its totient is φ = 158112.

The previous prime is 257281. The next prime is 257287. The reversal of 257283 is 382752.

It is not a de Polignac number, because 257283 - 2¹ = 257281 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (257281) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16 + ... + 717.

It is an arithmetic number, because the mean of its divisors is an integer number (25690).

2²⁵⁷²⁸³ is an apocalyptic number.

257283 is a deficient number, since it is larger than the sum of its proper divisors (153757).

257283 is a wasteful number, since it uses less digits than its factorization.

257283 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 755 (or 749 counting only the distinct ones).

The product of its digits is 3360, while the sum is 27.

The square root of 257283 is about 507.2307167355. The cubic root of 257283 is about 63.6019401331.

The spelling of 257283 in words is "two hundred fifty-seven thousand, two hundred eighty-three".