257090 has 16 divisors (see below), whose sum is σ = 473472. Its totient is φ = 100464.

The previous prime is 257077. The next prime is 257093. The reversal of 257090 is 90752.

257090 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (257093) by changing a digit.

257090 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 7 ways as a sum of consecutive naturals, for example, 197 + ... + 743.

It is an arithmetic number, because the mean of its divisors is an integer number (29592).

2²⁵⁷⁰⁹⁰ is an apocalyptic number.

257090 is a deficient number, since it is larger than the sum of its proper divisors (216382).

257090 is a wasteful number, since it uses less digits than its factorization.

257090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 601.

The product of its (nonzero) digits is 630, while the sum is 23.

The square root of 257090 is about 507.0404323128. The cubic root of 257090 is about 63.5860325590.

The spelling of 257090 in words is "two hundred fifty-seven thousand, ninety".