522223312 has 80 divisors (see below), whose sum is σ = 1116609088. Its totient is φ = 235146240.

The previous prime is 522223309. The next prime is 522223319. The reversal of 522223312 is 213322225.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (522223319) 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, 2474887 + ... + 2475097.

Almost surely, 2^522223312 is an apocalyptic number.

522223312 is a gapful number since it is divisible by the number (52) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 522223312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (558304544).

522223312 is an abundant number, since it is smaller than the sum of its proper divisors (594385776).

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

522223312 is a wasteful number, since it uses less digits than its factorization.

522223312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 468 (or 462 counting only the distinct ones).

The product of its digits is 1440, while the sum is 22.

The square root of 522223312 is about 22852.2058453883. The cubic root of 522223312 is about 805.2895898812.

Adding to 522223312 its reverse (213322225), we get a palindrome (735545537).

The spelling of 522223312 in words is "five hundred twenty-two million, two hundred twenty-three thousand, three hundred twelve".