520722 has 16 divisors (see below), whose sum is σ = 1157280. Its totient is φ = 173556.

The previous prime is 520721. The next prime is 520747. The reversal of 520722 is 227025.

It is a happy number.

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

It is a zygodrome in base 3.

It is a junction number, because it is equal to n+sod(n) for n = 520695 and 520704.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 520722.

It is not an unprimeable number, because it can be changed into a prime (520721) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4768 + ... + 4875.

It is an arithmetic number, because the mean of its divisors is an integer number (72330).

2⁵²⁰⁷²² is an apocalyptic number.

520722 is an abundant number, since it is smaller than the sum of its proper divisors (636558).

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

520722 is a wasteful number, since it uses less digits than its factorization.

520722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9654 (or 9648 counting only the distinct ones).

The product of its (nonzero) digits is 280, while the sum is 18.

The square root of 520722 is about 721.6106983686. The cubic root of 520722 is about 80.4517154472.

Adding to 520722 its reverse (227025), we get a palindrome (747747).

The spelling of 520722 in words is "five hundred twenty thousand, seven hundred twenty-two".