255556903 has 48 divisors (see below), whose sum is σ = 332424000. Its totient is φ = 194933760.

The previous prime is 255556853. The next prime is 255556943. The reversal of 255556903 is 309655552.

It is a happy number.

It is not a de Polignac number, because 255556903 - 2⁹ = 255556391 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255556943) 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 in 47 ways as a sum of consecutive naturals, for example, 1715073 + ... + 1715221.

It is an arithmetic number, because the mean of its divisors is an integer number (6925500).

Almost surely, 2^255556903 is an apocalyptic number.

255556903 is a deficient number, since it is larger than the sum of its proper divisors (76867097).

255556903 is a wasteful number, since it uses less digits than its factorization.

255556903 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 280 (or 273 counting only the distinct ones).

The product of its (nonzero) digits is 202500, while the sum is 40.

The square root of 255556903 is about 15986.1472218918. The cubic root of 255556903 is about 634.5938693056.

The spelling of 255556903 in words is "two hundred fifty-five million, five hundred fifty-six thousand, nine hundred three".