520444 has 12 divisors (see below), whose sum is σ = 950544. Its totient is φ = 248864.

The previous prime is 520433. The next prime is 520447. The reversal of 520444 is 444025.

520444 = T₅₇ + T₅₈ + ... + T₁₄₈.

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 (520447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2737 + ... + 2920.

It is an arithmetic number, because the mean of its divisors is an integer number (79212).

2⁵²⁰⁴⁴⁴ is an apocalyptic number.

It is an amenable number.

520444 is a deficient number, since it is larger than the sum of its proper divisors (430100).

520444 is a wasteful number, since it uses less digits than its factorization.

520444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5684 (or 5682 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 19.

The square root of 520444 is about 721.4180480138. The cubic root of 520444 is about 80.4373958690.

Adding to 520444 its reverse (444025), we get a palindrome (964469).

It can be divided in two parts, 5 and 20444, that added together give a square (20449 = 143²).

The spelling of 520444 in words is "five hundred twenty thousand, four hundred forty-four".