52639806 has 16 divisors (see below), whose sum is σ = 106246800. Its totient is φ = 17385408.

The previous prime is 52639757. The next prime is 52639817. The reversal of 52639806 is 60893625.

52639806 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent 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 7 ways as a sum of consecutive naturals, for example, 39591 + ... + 40898.

It is an arithmetic number, because the mean of its divisors is an integer number (6640425).

Almost surely, 2^52639806 is an apocalyptic number.

52639806 is an abundant number, since it is smaller than the sum of its proper divisors (53606994).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

52639806 is a wasteful number, since it uses less digits than its factorization.

52639806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80603.

The product of its (nonzero) digits is 77760, while the sum is 39.

The square root of 52639806 is about 7255.3294894167. The cubic root of 52639806 is about 374.7757023127.

The spelling of 52639806 in words is "fifty-two million, six hundred thirty-nine thousand, eight hundred six".