52436221 has 16 divisors (see below), whose sum is σ = 55982080. Its totient is φ = 49034160.

The previous prime is 52436213. The next prime is 52436227. The reversal of 52436221 is 12263425.

52436221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 52436221 - 2³ = 52436213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52436227) 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 15 ways as a sum of consecutive naturals, for example, 185146 + ... + 185428.

It is an arithmetic number, because the mean of its divisors is an integer number (3498880).

Almost surely, 2^52436221 is an apocalyptic number.

It is an amenable number.

52436221 is a deficient number, since it is larger than the sum of its proper divisors (3545859).

52436221 is a wasteful number, since it uses less digits than its factorization.

52436221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 496.

The product of its digits is 2880, while the sum is 25.

The square root of 52436221 is about 7241.2858664743. The cubic root of 52436221 is about 374.2919284599.

Adding to 52436221 its reverse (12263425), we get a palindrome (64699646).

The spelling of 52436221 in words is "fifty-two million, four hundred thirty-six thousand, two hundred twenty-one".