355623222 has 16 divisors (see below), whose sum is σ = 718289712. Its totient is φ = 117367200.

The previous prime is 355623193. The next prime is 355623239. The reversal of 355623222 is 222326553.

It is a super-2 number, since 2×355623222² = 252935752051322568, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 355623222.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 292813 + ... + 294024.

It is an arithmetic number, because the mean of its divisors is an integer number (44893107).

Almost surely, 2^355623222 is an apocalyptic number.

355623222 is an abundant number, since it is smaller than the sum of its proper divisors (362666490).

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

355623222 is a wasteful number, since it uses less digits than its factorization.

355623222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 586943.

The product of its digits is 21600, while the sum is 30.

The square root of 355623222 is about 18857.9750238460. The cubic root of 355623222 is about 708.4839847255.

Adding to 355623222 its reverse (222326553), we get a palindrome (577949775).

The spelling of 355623222 in words is "three hundred fifty-five million, six hundred twenty-three thousand, two hundred twenty-two".