556446 has 16 divisors (see below), whose sum is σ = 1214208. Its totient is φ = 168600.

The previous prime is 556441. The next prime is 556459. The reversal of 556446 is 644655.

It is a congruent number.

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

556446 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, 4150 + ... + 4281.

It is an arithmetic number, because the mean of its divisors is an integer number (75888).

2⁵⁵⁶⁴⁴⁶ is an apocalyptic number.

556446 is an abundant number, since it is smaller than the sum of its proper divisors (657762).

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

556446 is a wasteful number, since it uses less digits than its factorization.

556446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8447.

The product of its digits is 14400, while the sum is 30.

The square root of 556446 is about 745.9530816345. The cubic root of 556446 is about 82.2509661968.

Adding to 556446 its product of digits (14400), we get a triangular number (570846 = T₁₀₆₈).

Subtracting 556446 from its reverse (644655), we obtain a square (88209 = 297²).

The spelling of 556446 in words is "five hundred fifty-six thousand, four hundred forty-six".