555222 has 32 divisors (see below), whose sum is σ = 1187424. Its totient is φ = 172800.

The previous prime is 555221. The next prime is 555251. The reversal of 555222 is 222555.

555222 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an Ulam number.

It is a nialpdrome in base 10.

It is a zygodrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (555221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9072 + ... + 9132.

It is an arithmetic number, because the mean of its divisors is an integer number (37107).

2⁵⁵⁵²²² is an apocalyptic number.

555222 is an abundant number, since it is smaller than the sum of its proper divisors (632202).

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

555222 is a wasteful number, since it uses less digits than its factorization.

555222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144.

The product of its digits is 1000, while the sum is 21.

The square root of 555222 is about 745.1322030351. The cubic root of 555222 is about 82.1906134758.

Adding to 555222 its reverse (222555), we get a palindrome (777777).

It can be divided in two parts, 555 and 222, that added together give a palindrome (777).

The spelling of 555222 in words is "five hundred fifty-five thousand, two hundred twenty-two".