52123220 has 12 divisors (see below), whose sum is σ = 109458804. Its totient is φ = 20849280.

The previous prime is 52123163. The next prime is 52123229. The reversal of 52123220 is 2232125.

52123220 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 30426256 + 21696964 = 5516^2 + 4658^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52123229) by changing a digit.

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, 1303061 + ... + 1303100.

It is an arithmetic number, because the mean of its divisors is an integer number (9121567).

Almost surely, 2^52123220 is an apocalyptic number.

It is an amenable number.

52123220 is an abundant number, since it is smaller than the sum of its proper divisors (57335584).

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

52123220 is a wasteful number, since it uses less digits than its factorization.

52123220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2606170 (or 2606168 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 52123220 is about 7219.6412653261. The cubic root of 52123220 is about 373.5457036461.

Adding to 52123220 its reverse (2232125), we get a palindrome (54355345).

The spelling of 52123220 in words is "fifty-two million, one hundred twenty-three thousand, two hundred twenty".