518222 has 16 divisors (see below), whose sum is σ = 820800. Its totient is φ = 245088.

The previous prime is 518209. The next prime is 518233. The reversal of 518222 is 222815.

It is a junction number, because it is equal to n+sod(n) for n = 518194 and 518203.

It is a congruent number.

It is an unprimeable number.

518222 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, 3404 + ... + 3552.

It is an arithmetic number, because the mean of its divisors is an integer number (51300).

2⁵¹⁸²²² is an apocalyptic number.

518222 is a deficient number, since it is larger than the sum of its proper divisors (302578).

518222 is a wasteful number, since it uses less digits than its factorization.

518222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 235.

The product of its digits is 320, while the sum is 20.

The square root of 518222 is about 719.8763782762. The cubic root of 518222 is about 80.3227585850.

The spelling of 518222 in words is "five hundred eighteen thousand, two hundred twenty-two".