256056523 has 2 divisors, whose sum is σ = 256056524. Its totient is φ = 256056522.

The previous prime is 256056491. The next prime is 256056551. The reversal of 256056523 is 325650652.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 256056523 - 2⁵ = 256056491 is a prime.

It is not a weakly prime, because it can be changed into another prime (256056583) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128028261 + 128028262.

It is an arithmetic number, because the mean of its divisors is an integer number (128028262).

Almost surely, 2^256056523 is an apocalyptic number.

256056523 is a deficient number, since it is larger than the sum of its proper divisors (1).

256056523 is an equidigital number, since it uses as much as digits as its factorization.

256056523 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54000, while the sum is 34.

The square root of 256056523 is about 16001.7662462617. The cubic root of 256056523 is about 635.0071489471.

The spelling of 256056523 in words is "two hundred fifty-six million, fifty-six thousand, five hundred twenty-three".