52688393 has 4 divisors (see below), whose sum is σ = 52728468. Its totient is φ = 52648320.

The previous prime is 52688381. The next prime is 52688401. The reversal of 52688393 is 39388625.

52688393 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 can be written as a sum of positive squares in 2 ways, for example, as 25928464 + 26759929 = 5092^2 + 5173^2 .

It is a cyclic number.

It is not a de Polignac number, because 52688393 - 2²⁴ = 35911177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52688303) 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, 17996 + ... + 20717.

It is an arithmetic number, because the mean of its divisors is an integer number (13182117).

Almost surely, 2^52688393 is an apocalyptic number.

It is an amenable number.

52688393 is a deficient number, since it is larger than the sum of its proper divisors (40075).

52688393 is a wasteful number, since it uses less digits than its factorization.

52688393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40074.

The product of its digits is 311040, while the sum is 44.

The square root of 52688393 is about 7258.6770833259. The cubic root of 52688393 is about 374.8909739349.

The spelling of 52688393 in words is "fifty-two million, six hundred eighty-eight thousand, three hundred ninety-three".