52520717 has 2 divisors, whose sum is σ = 52520718. Its totient is φ = 52520716.

The previous prime is 52520659. The next prime is 52520729. The reversal of 52520717 is 71702525.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 46635241 + 5885476 = 6829^2 + 2426^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-52520717 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 52520717.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (52520317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26260358 + 26260359.

It is an arithmetic number, because the mean of its divisors is an integer number (26260359).

Almost surely, 2^52520717 is an apocalyptic number.

It is an amenable number.

52520717 is a deficient number, since it is larger than the sum of its proper divisors (1).

52520717 is an equidigital number, since it uses as much as digits as its factorization.

52520717 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4900, while the sum is 29.

The square root of 52520717 is about 7247.1178409075. The cubic root of 52520717 is about 374.4928658899.

The spelling of 52520717 in words is "fifty-two million, five hundred twenty thousand, seven hundred seventeen".