255958243 has 2 divisors, whose sum is σ = 255958244. Its totient is φ = 255958242.

The previous prime is 255958201. The next prime is 255958247. The reversal of 255958243 is 342859552.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 255958243 - 2¹⁷ = 255827171 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 255958243.

It is not a weakly prime, because it can be changed into another prime (255958247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127979121 + 127979122.

It is an arithmetic number, because the mean of its divisors is an integer number (127979122).

Almost surely, 2^255958243 is an apocalyptic number.

255958243 is a deficient number, since it is larger than the sum of its proper divisors (1).

255958243 is an equidigital number, since it uses as much as digits as its factorization.

255958243 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 432000, while the sum is 43.

The square root of 255958243 is about 15998.6950405338. The cubic root of 255958243 is about 634.9258954175.

The spelling of 255958243 in words is "two hundred fifty-five million, nine hundred fifty-eight thousand, two hundred forty-three".