257051 has 8 divisors (see below), whose sum is σ = 275520. Its totient is φ = 239112.

The previous prime is 257017. The next prime is 257053. The reversal of 257051 is 150752.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-257051 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (257053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1496 + ... + 1658.

It is an arithmetic number, because the mean of its divisors is an integer number (34440).

2²⁵⁷⁰⁵¹ is an apocalyptic number.

257051 is a deficient number, since it is larger than the sum of its proper divisors (18469).

257051 is a wasteful number, since it uses less digits than its factorization.

257051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 265.

The product of its (nonzero) digits is 350, while the sum is 20.

The square root of 257051 is about 507.0019723828. The cubic root of 257051 is about 63.5828171083.

The spelling of 257051 in words is "two hundred fifty-seven thousand, fifty-one".