521250252 has 24 divisors (see below), whose sum is σ = 1222368000. Its totient is φ = 172876176.

The previous prime is 521250241. The next prime is 521250259. The reversal of 521250252 is 252052125.

It is not an unprimeable number, because it can be changed into a prime (521250259) 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, 106752 + ... + 111527.

It is an arithmetic number, because the mean of its divisors is an integer number (50932000).

Almost surely, 2^521250252 is an apocalyptic number.

It is an amenable number.

521250252 is an abundant number, since it is smaller than the sum of its proper divisors (701117748).

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

521250252 is a wasteful number, since it uses less digits than its factorization.

521250252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 218485 (or 218483 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 24.

The square root of 521250252 is about 22830.9056324974. The cubic root of 521250252 is about 804.7891128718.

The spelling of 521250252 in words is "five hundred twenty-one million, two hundred fifty thousand, two hundred fifty-two".