52639 has 2 divisors, whose sum is σ = 52640.
Its totient is φ = 52638.
The previous prime is 52631. The next prime is 52667. The reversal of 52639 is 93625.
It is a weak prime.
It is a cyclic number.
It is not a de Polignac number, because 52639 - 23 = 52631 is a prime.
It is a d-powerful number, because it can be written as 55 + 211 + 66 + 36 + 92 .
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (52631) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (11) of ones.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26319 + 26320.
It is an arithmetic number, because the mean of its divisors is an integer number (26320).
252639 is an apocalyptic number.
52639 is a deficient number, since it is larger than the sum of its proper divisors (1).
52639 is an equidigital number, since it uses as much as digits as its factorization.
52639 is an odious number, because the sum of its binary digits is odd.
The product of its digits is 1620, while the sum is 25.
The square root of 52639 is about 229.4319071097.
The cubic root of 52639 is about 37.4773789497.
It can be divided in two parts, 526 and 39, that added together give a palindrome (565).
The spelling of 52639 in words is "fifty-two thousand, six hundred thirty-nine".