52318687 has 2 divisors, whose sum is σ = 52318688. Its totient is φ = 52318686.

The previous prime is 52318681. The next prime is 52318709. The reversal of 52318687 is 78681325.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 52318687 - 2²³ = 43930079 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (52318681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26159343 + 26159344.

It is an arithmetic number, because the mean of its divisors is an integer number (26159344).

Almost surely, 2^52318687 is an apocalyptic number.

52318687 is a deficient number, since it is larger than the sum of its proper divisors (1).

52318687 is an equidigital number, since it uses as much as digits as its factorization.

52318687 is an evil number, because the sum of its binary digits is even.

The product of its digits is 80640, while the sum is 40.

The square root of 52318687 is about 7233.1657661082. The cubic root of 52318687 is about 374.0120650592.

The spelling of 52318687 in words is "fifty-two million, three hundred eighteen thousand, six hundred eighty-seven".