255217255 has 16 divisors (see below), whose sum is σ = 324197280. Its totient is φ = 192544128.

The previous prime is 255217241. The next prime is 255217283. The reversal of 255217255 is 552712552.

It is a cyclic number.

It is not a de Polignac number, because 255217255 - 2⁹ = 255216743 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 255217255.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14232 + ... + 26701.

It is an arithmetic number, because the mean of its divisors is an integer number (20262330).

Almost surely, 2^255217255 is an apocalyptic number.

255217255 is a deficient number, since it is larger than the sum of its proper divisors (68980025).

255217255 is a wasteful number, since it uses less digits than its factorization.

255217255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41010.

The product of its digits is 35000, while the sum is 34.

The square root of 255217255 is about 15975.5204923032. The cubic root of 255217255 is about 634.3126089238.

The spelling of 255217255 in words is "two hundred fifty-five million, two hundred seventeen thousand, two hundred fifty-five".