52639589 has 2 divisors, whose sum is σ = 52639590. Its totient is φ = 52639588.

The previous prime is 52639583. The next prime is 52639591. The reversal of 52639589 is 98593625.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 47541025 + 5098564 = 6895^2 + 2258^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-52639589 is a prime.

Together with 52639591, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (52639583) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26319794 + 26319795.

It is an arithmetic number, because the mean of its divisors is an integer number (26319795).

Almost surely, 2^52639589 is an apocalyptic number.

It is an amenable number.

52639589 is a deficient number, since it is larger than the sum of its proper divisors (1).

52639589 is an equidigital number, since it uses as much as digits as its factorization.

52639589 is an evil number, because the sum of its binary digits is even.

The product of its digits is 583200, while the sum is 47.

The square root of 52639589 is about 7255.3145348772. The cubic root of 52639589 is about 374.7751873257.

The spelling of 52639589 in words is "fifty-two million, six hundred thirty-nine thousand, five hundred eighty-nine".