256097 has 4 divisors (see below), whose sum is σ = 259776. Its totient is φ = 252420.

The previous prime is 256093. The next prime is 256117. The reversal of 256097 is 790652.

256097 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 256097 - 2² = 256093 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (256093) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1733 + ... + 1874.

It is an arithmetic number, because the mean of its divisors is an integer number (64944).

2²⁵⁶⁰⁹⁷ is an apocalyptic number.

It is an amenable number.

256097 is a deficient number, since it is larger than the sum of its proper divisors (3679).

256097 is an equidigital number, since it uses as much as digits as its factorization.

256097 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3678.

The product of its (nonzero) digits is 3780, while the sum is 29.

The square root of 256097 is about 506.0602730901. The cubic root of 256097 is about 63.5040607484.

The spelling of 256097 in words is "two hundred fifty-six thousand, ninety-seven".