256117883 has 4 divisors (see below), whose sum is σ = 292706160. Its totient is φ = 219529608.

The previous prime is 256117861. The next prime is 256117907. The reversal of 256117883 is 388711652.

256117883 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 256117883 - 2⁶ = 256117819 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 256117883.

It is not an unprimeable number, because it can be changed into a prime (256107883) 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, 18294128 + ... + 18294141.

It is an arithmetic number, because the mean of its divisors is an integer number (73176540).

Almost surely, 2^256117883 is an apocalyptic number.

256117883 is a deficient number, since it is larger than the sum of its proper divisors (36588277).

256117883 is an equidigital number, since it uses as much as digits as its factorization.

256117883 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36588276.

The product of its digits is 80640, while the sum is 41.

The square root of 256117883 is about 16003.6834197631. The cubic root of 256117883 is about 635.0578681220.

The spelling of 256117883 in words is "two hundred fifty-six million, one hundred seventeen thousand, eight hundred eighty-three".