556126 has 4 divisors (see below), whose sum is σ = 834192. Its totient is φ = 278062.

The previous prime is 556123. The next prime is 556159. The reversal of 556126 is 621655.

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

It is a super-2 number, since 2×556126² = 618552255752, which contains 22 as substring.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 556126.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (556123) by changing a digit.

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, 139030 + ... + 139033.

It is an arithmetic number, because the mean of its divisors is an integer number (208548).

2⁵⁵⁶¹²⁶ is an apocalyptic number.

556126 is a deficient number, since it is larger than the sum of its proper divisors (278066).

556126 is a wasteful number, since it uses less digits than its factorization.

556126 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 278065.

The product of its digits is 1800, while the sum is 25.

The square root of 556126 is about 745.7385600866. The cubic root of 556126 is about 82.2351962591.

The spelling of 556126 in words is "five hundred fifty-six thousand, one hundred twenty-six".