52185517 has 4 divisors (see below), whose sum is σ = 52320060. Its totient is φ = 52050976.

The previous prime is 52185499. The next prime is 52185521. The reversal of 52185517 is 71558125.

52185517 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 15570916 + 36614601 = 3946^2 + 6051^2 .

It is a cyclic number.

It is not a de Polignac number, because 52185517 - 2¹⁹ = 51661229 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52185017) 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 in 3 ways as a sum of consecutive naturals, for example, 66688 + ... + 67465.

It is an arithmetic number, because the mean of its divisors is an integer number (13080015).

Almost surely, 2^52185517 is an apocalyptic number.

It is an amenable number.

52185517 is a deficient number, since it is larger than the sum of its proper divisors (134543).

52185517 is a wasteful number, since it uses less digits than its factorization.

52185517 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134542.

The product of its digits is 14000, while the sum is 34.

The square root of 52185517 is about 7223.9543880066. The cubic root of 52185517 is about 373.6944633983.

The spelling of 52185517 in words is "fifty-two million, one hundred eighty-five thousand, five hundred seventeen".