556903 has 12 divisors (see below), whose sum is σ = 618912. Its totient is φ = 500480.

The previous prime is 556891. The next prime is 556931. The reversal of 556903 is 309655.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-556903 is a prime.

It is a Duffinian number.

556903 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (556943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11826 + ... + 11872.

It is an arithmetic number, because the mean of its divisors is an integer number (51576).

2⁵⁵⁶⁹⁰³ is an apocalyptic number.

556903 is a deficient number, since it is larger than the sum of its proper divisors (62009).

556903 is a wasteful number, since it uses less digits than its factorization.

556903 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122 (or 105 counting only the distinct ones).

The product of its (nonzero) digits is 4050, while the sum is 28.

The square root of 556903 is about 746.2593383000. The cubic root of 556903 is about 82.2734771598.

The spelling of 556903 in words is "five hundred fifty-six thousand, nine hundred three".