556018 has 8 divisors (see below), whose sum is σ = 837612. Its totient is φ = 276816.

The previous prime is 556007. The next prime is 556021. The reversal of 556018 is 810655.

It can be written as a sum of positive squares in 2 ways, for example, as 552049 + 3969 = 743^2 + 63^2 .

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 = 555983 and 556001.

It is an unprimeable number.

556018 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 3 ways as a sum of consecutive naturals, for example, 196 + ... + 1072.

2⁵⁵⁶⁰¹⁸ is an apocalyptic number.

556018 is a deficient number, since it is larger than the sum of its proper divisors (281594).

556018 is a wasteful number, since it uses less digits than its factorization.

556018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1196.

The product of its (nonzero) digits is 1200, while the sum is 25.

The square root of 556018 is about 745.6661451347. Note that the first 3 decimals coincide. The cubic root of 556018 is about 82.2298725398.

The spelling of 556018 in words is "five hundred fifty-six thousand, eighteen".