556506 has 24 divisors (see below), whose sum is σ = 1235520. Its totient is φ = 180936.

The previous prime is 556487. The next prime is 556513. The reversal of 556506 is 605655.

556506 is a `hidden beast` number, since 5 + 5 + 650 + 6 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 556506.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 415 + ... + 1133.

It is an arithmetic number, because the mean of its divisors is an integer number (51480).

2⁵⁵⁶⁵⁰⁶ is an apocalyptic number.

556506 is an abundant number, since it is smaller than the sum of its proper divisors (679014).

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

556506 is a wasteful number, since it uses less digits than its factorization.

556506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 770 (or 767 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 27.

The square root of 556506 is about 745.9932975570. The cubic root of 556506 is about 82.2539223870.

It can be divided in two parts, 55 and 6506, that added together give a 8-th power (6561 = 3⁸).

The spelling of 556506 in words is "five hundred fifty-six thousand, five hundred six".