522522 has 96 divisors (see below), whose sum is σ = 1572480. Its totient is φ = 120960.

The previous prime is 522521. The next prime is 522523. The reversal of 522522 is 225225.

It is an interprime number because it is at equal distance from previous prime (522521) and next prime (522523).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a d-powerful number, because it can be written as 5² + 2⁵ + 5⁸ + 2⁸ + 2⁹ + 2¹⁷ .

It is a junction number, because it is equal to n+sod(n) for n = 522495 and 522504.

It is not an unprimeable number, because it can be changed into a prime (522521) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 18004 + ... + 18032.

It is an arithmetic number, because the mean of its divisors is an integer number (16380).

2⁵²²⁵²² is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 522522, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (786240).

522522 is an abundant number, since it is smaller than the sum of its proper divisors (1049958).

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

522522 is a wasteful number, since it uses less digits than its factorization.

522522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68 (or 65 counting only the distinct ones).

The product of its digits is 400, while the sum is 18.

The square root of 522522 is about 722.8568322981. The cubic root of 522522 is about 80.5443090302.

Adding to 522522 its reverse (225225), we get a palindrome (747747).

The spelling of 522522 in words is "five hundred twenty-two thousand, five hundred twenty-two".