522220000 has 60 divisors (see below), whose sum is σ = 1284788736. Its totient is φ = 208880000.

The previous prime is 522219989. The next prime is 522220001. The reversal of 522220000 is 22225.

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 (522220001) by changing a digit.

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 9 ways as a sum of consecutive naturals, for example, 6945 + ... + 33055.

Almost surely, 2^522220000 is an apocalyptic number.

522220000 is a gapful number since it is divisible by the number (50) 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 522220000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (642394368).

522220000 is an abundant number, since it is smaller than the sum of its proper divisors (762568736).

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

522220000 is an equidigital number, since it uses as much as digits as its factorization.

522220000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26141 (or 26118 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 13.

The square root of 522220000 is about 22852.1333796213. The cubic root of 522220000 is about 805.2878874647.

Adding to 522220000 its reverse (22225), we get a palindrome (522242225).

The spelling of 522220000 in words is "five hundred twenty-two million, two hundred twenty thousand".