52663220 has 12 divisors (see below), whose sum is σ = 110592804. Its totient is φ = 21065280.

The previous prime is 52663207. The next prime is 52663243. The reversal of 52663220 is 2236625.

52663220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 22676644 + 29986576 = 4762^2 + 5476^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 52663220.

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, 1316561 + ... + 1316600.

It is an arithmetic number, because the mean of its divisors is an integer number (9216067).

Almost surely, 2^52663220 is an apocalyptic number.

It is an amenable number.

52663220 is an abundant number, since it is smaller than the sum of its proper divisors (57929584).

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

52663220 is a wasteful number, since it uses less digits than its factorization.

52663220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2633170 (or 2633168 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 26.

The square root of 52663220 is about 7256.9428825091. The cubic root of 52663220 is about 374.8312603795.

Adding to 52663220 its reverse (2236625), we get a palindrome (54899845).

The spelling of 52663220 in words is "fifty-two million, six hundred sixty-three thousand, two hundred twenty".