556444 has 36 divisors (see below), whose sum is σ = 1206576. Its totient is φ = 223104.

The previous prime is 556441. The next prime is 556459. The reversal of 556444 is 444655.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (556441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3249 + ... + 3415.

It is an arithmetic number, because the mean of its divisors is an integer number (33516).

2⁵⁵⁶⁴⁴⁴ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 556444, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (603288).

556444 is an abundant number, since it is smaller than the sum of its proper divisors (650132).

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

556444 is a wasteful number, since it uses less digits than its factorization.

556444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202 (or 193 counting only the distinct ones).

The product of its digits is 9600, while the sum is 28.

The square root of 556444 is about 745.9517410664. The cubic root of 556444 is about 82.2508676534.

It can be divided in two parts, 556 and 444, that added together give a cube (1000 = 10³).

The spelling of 556444 in words is "five hundred fifty-six thousand, four hundred forty-four".