52221020 has 12 divisors (see below), whose sum is σ = 109664184. Its totient is φ = 20888400.

The previous prime is 52221011. The next prime is 52221031. The reversal of 52221020 is 2012225.

52221020 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 52220986 and 52221004.

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, 1305506 + ... + 1305545.

It is an arithmetic number, because the mean of its divisors is an integer number (9138682).

Almost surely, 2^52221020 is an apocalyptic number.

It is an amenable number.

52221020 is an abundant number, since it is smaller than the sum of its proper divisors (57443164).

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

52221020 is a wasteful number, since it uses less digits than its factorization.

52221020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2611060 (or 2611058 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 14.

The square root of 52221020 is about 7226.4112808503. The cubic root of 52221020 is about 373.7791884827.

Adding to 52221020 its reverse (2012225), we get a palindrome (54233245).

The spelling of 52221020 in words is "fifty-two million, two hundred twenty-one thousand, twenty".