556474 has 4 divisors (see below), whose sum is σ = 834714. Its totient is φ = 278236.

The previous prime is 556459. The next prime is 556477. The reversal of 556474 is 474655.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 429025 + 127449 = 655^2 + 357^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (556477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 139117 + ... + 139120.

2⁵⁵⁶⁴⁷⁴ is an apocalyptic number.

556474 is a deficient number, since it is larger than the sum of its proper divisors (278240).

556474 is a wasteful number, since it uses less digits than its factorization.

556474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 278239.

The product of its digits is 16800, while the sum is 31.

The square root of 556474 is about 745.9718493348. The cubic root of 556474 is about 82.2523457786.

The spelling of 556474 in words is "five hundred fifty-six thousand, four hundred seventy-four".