522320 has 20 divisors (see below), whose sum is σ = 1214580. Its totient is φ = 208896.

The previous prime is 522317. The next prime is 522323. The reversal of 522320 is 23225.

It is an interprime number because it is at equal distance from previous prime (522317) and next prime (522323).

It can be written as a sum of positive squares in 2 ways, for example, as 107584 + 414736 = 328^2 + 644^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a junction number, because it is equal to n+sod(n) for n = 522295 and 522304.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 522320.

It is not an unprimeable number, because it can be changed into a prime (522323) 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, 3185 + ... + 3344.

It is an arithmetic number, because the mean of its divisors is an integer number (60729).

2⁵²²³²⁰ is an apocalyptic number.

It is an amenable number.

522320 is an abundant number, since it is smaller than the sum of its proper divisors (692260).

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

522320 is a wasteful number, since it uses less digits than its factorization.

522320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6542 (or 6536 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 14.

The square root of 522320 is about 722.7170954115. The cubic root of 522320 is about 80.5339285757.

Adding to 522320 its reverse (23225), we get a palindrome (545545).

The spelling of 522320 in words is "five hundred twenty-two thousand, three hundred twenty".