257795 has 8 divisors (see below), whose sum is σ = 316224. Its totient is φ = 201664.

The previous prime is 257791. The next prime is 257797. The reversal of 257795 is 597752.

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

It is a cyclic number.

It is not a de Polignac number, because 257795 - 2² = 257791 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (257791) 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, 314 + ... + 783.

It is an arithmetic number, because the mean of its divisors is an integer number (39528).

2²⁵⁷⁷⁹⁵ is an apocalyptic number.

257795 is a deficient number, since it is larger than the sum of its proper divisors (58429).

257795 is a wasteful number, since it uses less digits than its factorization.

257795 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1149.

The product of its digits is 22050, while the sum is 35.

The square root of 257795 is about 507.7351671886. The cubic root of 257795 is about 63.6441020274.

The spelling of 257795 in words is "two hundred fifty-seven thousand, seven hundred ninety-five".