52521212 has 12 divisors (see below), whose sum is σ = 92822856. Its totient is φ = 26000400.

The previous prime is 52521199. The next prime is 52521221. The reversal of 52521212 is 21212525.

It is a happy number.

52521212 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is an unprimeable number.

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, 64598 + ... + 65405.

It is an arithmetic number, because the mean of its divisors is an integer number (7735238).

Almost surely, 2^52521212 is an apocalyptic number.

It is an amenable number.

52521212 is a deficient number, since it is larger than the sum of its proper divisors (40301644).

52521212 is a wasteful number, since it uses less digits than its factorization.

52521212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130108 (or 130106 counting only the distinct ones).

The product of its digits is 400, while the sum is 20.

The square root of 52521212 is about 7247.1519923346. The cubic root of 52521212 is about 374.4940423995.

Adding to 52521212 its reverse (21212525), we get a palindrome (73733737).

The spelling of 52521212 in words is "fifty-two million, five hundred twenty-one thousand, two hundred twelve".