53321212 has 36 divisors (see below), whose sum is σ = 109278120. Its totient is φ = 22698144.

The previous prime is 53321207. The next prime is 53321221. The reversal of 53321212 is 21212335.

It is a self number, because there is not a number n which added to its sum of digits gives 53321212.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 31114 + ... + 32782.

Almost surely, 2^53321212 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 53321212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (54639060).

53321212 is an abundant number, since it is smaller than the sum of its proper divisors (55956908).

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

53321212 is a wasteful number, since it uses less digits than its factorization.

53321212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1850 (or 1841 counting only the distinct ones).

The product of its digits is 360, while the sum is 19.

The square root of 53321212 is about 7302.1374952818. The cubic root of 53321212 is about 376.3858928633.

Adding to 53321212 its reverse (21212335), we get a palindrome (74533547).

The spelling of 53321212 in words is "fifty-three million, three hundred twenty-one thousand, two hundred twelve".