522784 has 36 divisors (see below), whose sum is σ = 1126062. Its totient is φ = 238080.

The previous prime is 522763. The next prime is 522787. The reversal of 522784 is 487225.

522784 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 384400 + 138384 = 620^2 + 372^2 .

It is a super-2 number, since 2×522784² = 546606221312, which contains 22 as substring.

It is a nialpdrome in base 9.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (522787) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 16849 + ... + 16879.

2⁵²²⁷⁸⁴ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 522784, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (563031).

522784 is an abundant number, since it is smaller than the sum of its proper divisors (603278).

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

522784 is a wasteful number, since it uses less digits than its factorization.

522784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89 (or 50 counting only the distinct ones).

The product of its digits is 4480, while the sum is 28.

The square root of 522784 is about 723.0380349608. The cubic root of 522784 is about 80.5577688034.

The spelling of 522784 in words is "five hundred twenty-two thousand, seven hundred eighty-four".