52728443 has 4 divisors (see below), whose sum is σ = 55021008. Its totient is φ = 50435880.

The previous prime is 52728391. The next prime is 52728451. The reversal of 52728443 is 34482725.

52728443 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 52728443 - 2⁸ = 52728187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52728463) 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, 1146248 + ... + 1146293.

It is an arithmetic number, because the mean of its divisors is an integer number (13755252).

Almost surely, 2^52728443 is an apocalyptic number.

52728443 is a deficient number, since it is larger than the sum of its proper divisors (2292565).

52728443 is a wasteful number, since it uses less digits than its factorization.

52728443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2292564.

The product of its digits is 53760, while the sum is 35.

The square root of 52728443 is about 7261.4353264351. The cubic root of 52728443 is about 374.9859384357.

The spelling of 52728443 in words is "fifty-two million, seven hundred twenty-eight thousand, four hundred forty-three".