52401221 has 8 divisors (see below), whose sum is σ = 55306080. Its totient is φ = 49511088.

The previous prime is 52401197. The next prime is 52401229. The reversal of 52401221 is 12210425.

52401221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 52401221 - 2¹⁰ = 52400197 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 52401221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52401229) 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, 4070 + ... + 11016.

It is an arithmetic number, because the mean of its divisors is an integer number (6913260).

Almost surely, 2^52401221 is an apocalyptic number.

It is an amenable number.

52401221 is a deficient number, since it is larger than the sum of its proper divisors (2904859).

52401221 is a wasteful number, since it uses less digits than its factorization.

52401221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7363.

The product of its (nonzero) digits is 160, while the sum is 17.

The square root of 52401221 is about 7238.8687652146. The cubic root of 52401221 is about 374.2086327722.

Adding to 52401221 its reverse (12210425), we get a palindrome (64611646).

The spelling of 52401221 in words is "fifty-two million, four hundred one thousand, two hundred twenty-one".