255684263 has 2 divisors, whose sum is σ = 255684264. Its totient is φ = 255684262.

The previous prime is 255684217. The next prime is 255684287. The reversal of 255684263 is 362486552.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 255684263 - 2¹⁸ = 255422119 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 255684263.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (255684203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127842131 + 127842132.

It is an arithmetic number, because the mean of its divisors is an integer number (127842132).

Almost surely, 2^255684263 is an apocalyptic number.

255684263 is a deficient number, since it is larger than the sum of its proper divisors (1).

255684263 is an equidigital number, since it uses as much as digits as its factorization.

255684263 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 345600, while the sum is 41.

The square root of 255684263 is about 15990.1301745796. The cubic root of 255684263 is about 634.6992710794.

The spelling of 255684263 in words is "two hundred fifty-five million, six hundred eighty-four thousand, two hundred sixty-three".