522220 has 12 divisors (see below), whose sum is σ = 1096704. Its totient is φ = 208880.

The previous prime is 522211. The next prime is 522227. The reversal of 522220 is 22225.

522220 = T₂₈₉ + T₂₉₀ + ... + T₃₀₀.

It is a nialpdrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 522220.

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

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13036 + ... + 13075.

It is an arithmetic number, because the mean of its divisors is an integer number (91392).

2⁵²²²²⁰ is an apocalyptic number.

It is an amenable number.

522220 is an abundant number, since it is smaller than the sum of its proper divisors (574484).

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

522220 is a wasteful number, since it uses less digits than its factorization.

522220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26120 (or 26118 counting only the distinct ones).

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

The square root of 522220 is about 722.6479087356. The cubic root of 522220 is about 80.5287887465.

Adding to 522220 its reverse (22225), we get a palindrome (544445).

It can be divided in two parts, 52 and 2220, that multiplied together give a triangular number (115440 = T₄₈₀).

The spelling of 522220 in words is "five hundred twenty-two thousand, two hundred twenty".