522222 has 8 divisors (see below), whose sum is σ = 1044456. Its totient is φ = 174072.

The previous prime is 522211. The next prime is 522227. The reversal of 522222 is 222225.

It is a sphenic number, since it is the product of 3 distinct primes.

522222 is an admirable number.

522222 is a modest number, since divided by 2222 gives 52 as remainder.

It is a nialpdrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (522227) by changing a digit.

522222 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43513 + ... + 43524.

It is an arithmetic number, because the mean of its divisors is an integer number (130557).

2⁵²²²²² is an apocalyptic number.

522222 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

522222 is a wasteful number, since it uses less digits than its factorization.

522222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87042.

The product of its digits is 160, while the sum is 15.

The square root of 522222 is about 722.6492925341. The cubic root of 522222 is about 80.5288915495.

Adding to 522222 its reverse (222225), we get a palindrome (744447).

The spelling of 522222 in words is "five hundred twenty-two thousand, two hundred twenty-two".