255017903 has 12 divisors (see below), whose sum is σ = 298155600. Its totient is φ = 217480032.

The previous prime is 255017891. The next prime is 255017921. The reversal of 255017903 is 309710552.

It is not a de Polignac number, because 255017903 - 2²⁴ = 238240687 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 255017903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255017923) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 3326 + ... + 22827.

It is an arithmetic number, because the mean of its divisors is an integer number (24846300).

Almost surely, 2^255017903 is an apocalyptic number.

255017903 is a deficient number, since it is larger than the sum of its proper divisors (43137697).

255017903 is a wasteful number, since it uses less digits than its factorization.

255017903 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26366 (or 26359 counting only the distinct ones).

The product of its (nonzero) digits is 9450, while the sum is 32.

The square root of 255017903 is about 15969.2799775068. The cubic root of 255017903 is about 634.1474105512.

The spelling of 255017903 in words is "two hundred fifty-five million, seventeen thousand, nine hundred three".