52639887 has 8 divisors (see below), whose sum is σ = 70881840. Its totient is φ = 34745600.

The previous prime is 52639883. The next prime is 52639907. The reversal of 52639887 is 78893625.

52639887 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 52639887 - 2² = 52639883 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52639883) 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 7 ways as a sum of consecutive naturals, for example, 86562 + ... + 87167.

It is an arithmetic number, because the mean of its divisors is an integer number (8860230).

Almost surely, 2^52639887 is an apocalyptic number.

52639887 is a deficient number, since it is larger than the sum of its proper divisors (18241953).

52639887 is a wasteful number, since it uses less digits than its factorization.

52639887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173833.

The product of its digits is 725760, while the sum is 48.

The square root of 52639887 is about 7255.3350715181. The cubic root of 52639887 is about 374.7758945424.

The spelling of 52639887 in words is "fifty-two million, six hundred thirty-nine thousand, eight hundred eighty-seven".