257270 has 16 divisors (see below), whose sum is σ = 498960. Its totient is φ = 94944.

The previous prime is 257263. The next prime is 257273. The reversal of 257270 is 72752.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 257270.

It is not an unprimeable number, because it can be changed into a prime (257273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 860 + ... + 1119.

It is an arithmetic number, because the mean of its divisors is an integer number (31185).

2²⁵⁷²⁷⁰ is an apocalyptic number.

257270 is a deficient number, since it is larger than the sum of its proper divisors (241690).

257270 is a wasteful number, since it uses less digits than its factorization.

257270 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1999.

The product of its (nonzero) digits is 980, while the sum is 23.

The square root of 257270 is about 507.2179018923. The cubic root of 257270 is about 63.6008688884.

The spelling of 257270 in words is "two hundred fifty-seven thousand, two hundred seventy".