556266 has 16 divisors (see below), whose sum is σ = 1126944. Its totient is φ = 183024.

The previous prime is 556261. The next prime is 556267. The reversal of 556266 is 662655.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (556261) by changing a digit.

556266 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 in 7 ways as a sum of consecutive naturals, for example, 61 + ... + 1056.

It is an arithmetic number, because the mean of its divisors is an integer number (70434).

2⁵⁵⁶²⁶⁶ is an apocalyptic number.

556266 is an abundant number, since it is smaller than the sum of its proper divisors (570678).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

556266 is a wasteful number, since it uses less digits than its factorization.

556266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1205.

The product of its digits is 10800, while the sum is 30.

The square root of 556266 is about 745.8324208561. The cubic root of 556266 is about 82.2420963510.

The spelling of 556266 in words is "five hundred fifty-six thousand, two hundred sixty-six".