255804233 has 2 divisors, whose sum is σ = 255804234. Its totient is φ = 255804232.

The previous prime is 255804209. The next prime is 255804251. The reversal of 255804233 is 332408552.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 216766729 + 39037504 = 14723^2 + 6248^2 .

It is a cyclic number.

It is not a de Polignac number, because 255804233 - 2⁶ = 255804169 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 255804233.

It is not a weakly prime, because it can be changed into another prime (255804203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127902116 + 127902117.

It is an arithmetic number, because the mean of its divisors is an integer number (127902117).

Almost surely, 2^255804233 is an apocalyptic number.

It is an amenable number.

255804233 is a deficient number, since it is larger than the sum of its proper divisors (1).

255804233 is an equidigital number, since it uses as much as digits as its factorization.

255804233 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 28800, while the sum is 32.

The square root of 255804233 is about 15993.8811112250. The cubic root of 255804233 is about 634.7985249592.

The spelling of 255804233 in words is "two hundred fifty-five million, eight hundred four thousand, two hundred thirty-three".