520520244 has 12 divisors (see below), whose sum is σ = 1214547264. Its totient is φ = 173506744.

The previous prime is 520520239. The next prime is 520520303. The reversal of 520520244 is 442025025.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

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, 21688332 + ... + 21688355.

It is an arithmetic number, because the mean of its divisors is an integer number (101212272).

Almost surely, 2^520520244 is an apocalyptic number.

It is an amenable number.

520520244 is an abundant number, since it is smaller than the sum of its proper divisors (694027020).

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

520520244 is a wasteful number, since it uses less digits than its factorization.

520520244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43376694 (or 43376692 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 24.

The square root of 520520244 is about 22814.9127545998. The cubic root of 520520244 is about 804.4132364946.

Adding to 520520244 its reverse (442025025), we get a palindrome (962545269).

The spelling of 520520244 in words is "five hundred twenty million, five hundred twenty thousand, two hundred forty-four".