522644 has 12 divisors (see below), whose sum is σ = 920724. Its totient is φ = 259584.

The previous prime is 522637. The next prime is 522659. The reversal of 522644 is 446225.

It can be written as a sum of positive squares in 2 ways, for example, as 372100 + 150544 = 610^2 + 388^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 434 + ... + 1110.

It is an arithmetic number, because the mean of its divisors is an integer number (76727).

2⁵²²⁶⁴⁴ is an apocalyptic number.

It is an amenable number.

522644 is a deficient number, since it is larger than the sum of its proper divisors (398080).

522644 is a wasteful number, since it uses less digits than its factorization.

522644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 874 (or 872 counting only the distinct ones).

The product of its digits is 1920, while the sum is 23.

The square root of 522644 is about 722.9412147609. The cubic root of 522644 is about 80.5505771178.

Adding to 522644 its reverse (446225), we get a palindrome (968869).

The spelling of 522644 in words is "five hundred twenty-two thousand, six hundred forty-four".