256779283 has 4 divisors (see below), whose sum is σ = 262242720. Its totient is φ = 251315848.

The previous prime is 256779251. The next prime is 256779307. The reversal of 256779283 is 382977652.

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 256779283 - 2⁵ = 256779251 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (256776283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2731648 + ... + 2731741.

It is an arithmetic number, because the mean of its divisors is an integer number (65560680).

Almost surely, 2^256779283 is an apocalyptic number.

256779283 is a deficient number, since it is larger than the sum of its proper divisors (5463437).

256779283 is an equidigital number, since it uses as much as digits as its factorization.

256779283 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5463436.

The product of its digits is 1270080, while the sum is 49.

The square root of 256779283 is about 16024.3340891283. The cubic root of 256779283 is about 635.6040570185.

The spelling of 256779283 in words is "two hundred fifty-six million, seven hundred seventy-nine thousand, two hundred eighty-three".