556426 has 8 divisors (see below), whose sum is σ = 898884. Its totient is φ = 256800.

The previous prime is 556403. The next prime is 556441. The reversal of 556426 is 624655.

556426 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 491401 + 65025 = 701^2 + 255^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 556394 and 556403.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10675 + ... + 10726.

2⁵⁵⁶⁴²⁶ is an apocalyptic number.

556426 is a deficient number, since it is larger than the sum of its proper divisors (342458).

556426 is a wasteful number, since it uses less digits than its factorization.

556426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21416.

The product of its digits is 7200, while the sum is 28.

The square root of 556426 is about 745.9396758452. The cubic root of 556426 is about 82.2499807528.

The spelling of 556426 in words is "five hundred fifty-six thousand, four hundred twenty-six".