521203252 has 12 divisors (see below), whose sum is σ = 914489856. Its totient is φ = 259920440.

The previous prime is 521203237. The next prime is 521203259. The reversal of 521203252 is 252302125.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (521203259) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 168574 + ... + 171637.

It is an arithmetic number, because the mean of its divisors is an integer number (76207488).

Almost surely, 2^521203252 is an apocalyptic number.

It is an amenable number.

521203252 is a deficient number, since it is larger than the sum of its proper divisors (393286604).

521203252 is a wasteful number, since it uses less digits than its factorization.

521203252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 340598 (or 340596 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 521203252 is about 22829.8763027748. The cubic root of 521203252 is about 804.7649234509.

Adding to 521203252 its reverse (252302125), we get a palindrome (773505377).

The spelling of 521203252 in words is "five hundred twenty-one million, two hundred three thousand, two hundred fifty-two".