52352220 has 72 divisors (see below), whose sum is σ = 154771344. Its totient is φ = 13220352.

The previous prime is 52352191. The next prime is 52352227. The reversal of 52352220 is 2225325.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52352227) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 20452 + ... + 22868.

It is an arithmetic number, because the mean of its divisors is an integer number (2149602).

Almost surely, 2^52352220 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 52352220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (77385672).

52352220 is an abundant number, since it is smaller than the sum of its proper divisors (102419124).

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

52352220 is a wasteful number, since it uses less digits than its factorization.

52352220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2467 (or 2446 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 21.

The square root of 52352220 is about 7235.4833978111. The cubic root of 52352220 is about 374.0919540929.

Adding to 52352220 its reverse (2225325), we get a palindrome (54577545).

The spelling of 52352220 in words is "fifty-two million, three hundred fifty-two thousand, two hundred twenty".