556874 has 4 divisors (see below), whose sum is σ = 835314. Its totient is φ = 278436.

The previous prime is 556867. The next prime is 556883. The reversal of 556874 is 478655.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 478655 = 5 ⋅95731.

It can be written as a sum of positive squares in only one way, i.e., 555025 + 1849 = 745^2 + 43^2 .

It is an Ulam number.

It is a plaindrome in base 15.

It is an unprimeable number.

556874 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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 as a sum of consecutive naturals, namely, 139217 + ... + 139220.

2⁵⁵⁶⁸⁷⁴ is an apocalyptic number.

556874 is a deficient number, since it is larger than the sum of its proper divisors (278440).

556874 is a wasteful number, since it uses less digits than its factorization.

556874 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 278439.

The product of its digits is 33600, while the sum is 35.

The square root of 556874 is about 746.2399078045. The cubic root of 556874 is about 82.2720490402.

The spelling of 556874 in words is "five hundred fifty-six thousand, eight hundred seventy-four".