256007 has 4 divisors (see below), whose sum is σ = 259896. Its totient is φ = 252120.

The previous prime is 255989. The next prime is 256019. The reversal of 256007 is 700652.

256007 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.

It is a cyclic number.

It is not a de Polignac number, because 256007 - 2¹⁴ = 239623 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 256007.

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 256007.

It is not an unprimeable number, because it can be changed into a prime (256057) 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, 1844 + ... + 1977.

It is an arithmetic number, because the mean of its divisors is an integer number (64974).

2²⁵⁶⁰⁰⁷ is an apocalyptic number.

256007 is a deficient number, since it is larger than the sum of its proper divisors (3889).

256007 is an equidigital number, since it uses as much as digits as its factorization.

256007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3888.

The product of its (nonzero) digits is 420, while the sum is 20.

The square root of 256007 is about 505.9713430620. The cubic root of 256007 is about 63.4966208134.

Adding to 256007 its reverse (700652), we get a palindrome (956659).

The spelling of 256007 in words is "two hundred fifty-six thousand, seven".