53728305 has 32 divisors (see below), whose sum is σ = 88017024. Its totient is φ = 27979776.

The previous prime is 53728261. The next prime is 53728331. The reversal of 53728305 is 50382735.

53728305 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 53728305 - 2¹⁴ = 53711921 is a prime.

It is a Curzon 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 31 ways as a sum of consecutive naturals, for example, 193827 + ... + 194103.

It is an arithmetic number, because the mean of its divisors is an integer number (2750532).

Almost surely, 2^53728305 is an apocalyptic number.

It is an amenable number.

53728305 is a deficient number, since it is larger than the sum of its proper divisors (34288719).

53728305 is a wasteful number, since it uses less digits than its factorization.

53728305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 545.

The product of its (nonzero) digits is 25200, while the sum is 33.

The square root of 53728305 is about 7329.9594132573. The cubic root of 53728305 is about 377.3413335515.

The spelling of 53728305 in words is "fifty-three million, seven hundred twenty-eight thousand, three hundred five".