555906 has 16 divisors (see below), whose sum is σ = 1197504. Its totient is φ = 171024.

The previous prime is 555871. The next prime is 555931. The reversal of 555906 is 609555.

It is a happy number.

It is an unprimeable number.

555906 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3486 + ... + 3641.

It is an arithmetic number, because the mean of its divisors is an integer number (74844).

2⁵⁵⁵⁹⁰⁶ is an apocalyptic number.

555906 is an abundant number, since it is smaller than the sum of its proper divisors (641598).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

555906 is a wasteful number, since it uses less digits than its factorization.

555906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7145.

The product of its (nonzero) digits is 6750, while the sum is 30.

The square root of 555906 is about 745.5910407187. The cubic root of 555906 is about 82.2243509175.

The spelling of 555906 in words is "five hundred fifty-five thousand, nine hundred six".