52686239 has 2 divisors, whose sum is σ = 52686240. Its totient is φ = 52686238.

The previous prime is 52686211. The next prime is 52686241. The reversal of 52686239 is 93268625.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-52686239 is a prime.

Together with 52686241, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 52686196 and 52686205.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (52686209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26343119 + 26343120.

It is an arithmetic number, because the mean of its divisors is an integer number (26343120).

Almost surely, 2^52686239 is an apocalyptic number.

52686239 is a deficient number, since it is larger than the sum of its proper divisors (1).

52686239 is an equidigital number, since it uses as much as digits as its factorization.

52686239 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 155520, while the sum is 41.

The square root of 52686239 is about 7258.5287076652. The cubic root of 52686239 is about 374.8858651173.

It can be divided in two parts, 52686 and 239, that added together give a palindrome (52925).

The spelling of 52686239 in words is "fifty-two million, six hundred eighty-six thousand, two hundred thirty-nine".