52565917 has 2 divisors, whose sum is σ = 52565918. Its totient is φ = 52565916.

The previous prime is 52565911. The next prime is 52565963. The reversal of 52565917 is 71956525.

52565917 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 41100921 + 11464996 = 6411^2 + 3386^2 .

It is a cyclic number.

It is not a de Polignac number, because 52565917 - 2¹⁹ = 52041629 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 52565917.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (52565911) 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 as a sum of consecutive naturals, namely, 26282958 + 26282959.

It is an arithmetic number, because the mean of its divisors is an integer number (26282959).

Almost surely, 2^52565917 is an apocalyptic number.

It is an amenable number.

52565917 is a deficient number, since it is larger than the sum of its proper divisors (1).

52565917 is an equidigital number, since it uses as much as digits as its factorization.

52565917 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 94500, while the sum is 40.

The square root of 52565917 is about 7250.2356513427. The cubic root of 52565917 is about 374.6002662006.

The spelling of 52565917 in words is "fifty-two million, five hundred sixty-five thousand, nine hundred seventeen".