52221699 has 8 divisors (see below), whose sum is σ = 77365520. Its totient is φ = 34814448.

The previous prime is 52221679. The next prime is 52221703. The reversal of 52221699 is 99612225.

It is a happy number.

52221699 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 52221699 - 2⁷ = 52221571 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52221649) 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 7 ways as a sum of consecutive naturals, for example, 967042 + ... + 967095.

It is an arithmetic number, because the mean of its divisors is an integer number (9670690).

Almost surely, 2^52221699 is an apocalyptic number.

52221699 is a deficient number, since it is larger than the sum of its proper divisors (25143821).

52221699 is a wasteful number, since it uses less digits than its factorization.

52221699 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1934146 (or 1934140 counting only the distinct ones).

The product of its digits is 19440, while the sum is 36.

The square root of 52221699 is about 7226.4582611401. The cubic root of 52221699 is about 373.7808084878.

The spelling of 52221699 in words is "fifty-two million, two hundred twenty-one thousand, six hundred ninety-nine".