256047833 has 2 divisors, whose sum is σ = 256047834. Its totient is φ = 256047832.

The previous prime is 256047791. The next prime is 256047839. The reversal of 256047833 is 338740652.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 129777664 + 126270169 = 11392^2 + 11237^2 .

It is a cyclic number.

It is not a de Polignac number, because 256047833 - 2⁸ = 256047577 is a prime.

It is not a weakly prime, because it can be changed into another prime (256047839) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128023916 + 128023917.

It is an arithmetic number, because the mean of its divisors is an integer number (128023917).

Almost surely, 2^256047833 is an apocalyptic number.

It is an amenable number.

256047833 is a deficient number, since it is larger than the sum of its proper divisors (1).

256047833 is an equidigital number, since it uses as much as digits as its factorization.

256047833 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 120960, while the sum is 38.

The square root of 256047833 is about 16001.4947114324. The cubic root of 256047833 is about 634.9999652799. Note that the first 4 decimals are identical.

The spelling of 256047833 in words is "two hundred fifty-six million, forty-seven thousand, eight hundred thirty-three".