522744 has 32 divisors (see below), whose sum is σ = 1365120. Its totient is φ = 166496.

The previous prime is 522737. The next prime is 522749. The reversal of 522744 is 447225.

It is a super-2 number, since 2×522744² = 546522579072, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a d-powerful number, because it can be written as 5⁸ + 2¹⁶ + 7 + 2¹⁶ + 4² + 4⁵ .

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (522749) 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, 79 + ... + 1025.

It is an arithmetic number, because the mean of its divisors is an integer number (42660).

2⁵²²⁷⁴⁴ 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 522744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (682560).

522744 is an abundant number, since it is smaller than the sum of its proper divisors (842376).

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

522744 is a wasteful number, since it uses less digits than its factorization.

522744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 979 (or 975 counting only the distinct ones).

The product of its digits is 2240, while the sum is 24.

The square root of 522744 is about 723.0103733696. The cubic root of 522744 is about 80.5557141671. Note that the first 3 decimals are identical.

Adding to 522744 its reverse (447225), we get a palindrome (969969).

The spelling of 522744 in words is "five hundred twenty-two thousand, seven hundred forty-four".