256088243 has 2 divisors, whose sum is σ = 256088244. Its totient is φ = 256088242.

The previous prime is 256088207. The next prime is 256088257. The reversal of 256088243 is 342880652.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 256088243 - 2¹⁸ = 255826099 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 256088197 and 256088206.

It is not a weakly prime, because it can be changed into another prime (256088293) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128044121 + 128044122.

It is an arithmetic number, because the mean of its divisors is an integer number (128044122).

Almost surely, 2^256088243 is an apocalyptic number.

256088243 is a deficient number, since it is larger than the sum of its proper divisors (1).

256088243 is an equidigital number, since it uses as much as digits as its factorization.

256088243 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 92160, while the sum is 38.

The square root of 256088243 is about 16002.7573561558. The cubic root of 256088243 is about 635.0333691932.

The spelling of 256088243 in words is "two hundred fifty-six million, eighty-eight thousand, two hundred forty-three".