256263043 has 2 divisors, whose sum is σ = 256263044. Its totient is φ = 256263042.

The previous prime is 256263037. The next prime is 256263047. The reversal of 256263043 is 340362652.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 256263043 - 2⁵ = 256263011 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 256262996 and 256263014.

It is not a weakly prime, because it can be changed into another prime (256263047) 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 as a sum of consecutive naturals, namely, 128131521 + 128131522.

It is an arithmetic number, because the mean of its divisors is an integer number (128131522).

Almost surely, 2^256263043 is an apocalyptic number.

256263043 is a deficient number, since it is larger than the sum of its proper divisors (1).

256263043 is an equidigital number, since it uses as much as digits as its factorization.

256263043 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25920, while the sum is 31.

The square root of 256263043 is about 16008.2179832735. The cubic root of 256263043 is about 635.1778227677.

The spelling of 256263043 in words is "two hundred fifty-six million, two hundred sixty-three thousand, forty-three".