52385517 has 12 divisors (see below), whose sum is σ = 80119260. Its totient is φ = 32869248.

The previous prime is 52385507. The next prime is 52385521. The reversal of 52385517 is 71558325.

52385517 is a `hidden beast` number, since 523 + 85 + 51 + 7 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 46867716 + 5517801 = 6846^2 + 2349^2 .

It is not a de Polignac number, because 52385517 - 2¹² = 52381421 is a prime.

It is a super-3 number, since 3×52385517³ (a number of 24 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52385507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 171042 + ... + 171347.

It is an arithmetic number, because the mean of its divisors is an integer number (6676605).

Almost surely, 2^52385517 is an apocalyptic number.

It is an amenable number.

52385517 is a deficient number, since it is larger than the sum of its proper divisors (27733743).

52385517 is a wasteful number, since it uses less digits than its factorization.

52385517 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 342412 (or 342409 counting only the distinct ones).

The product of its digits is 42000, while the sum is 36.

The square root of 52385517 is about 7237.7839840658. The cubic root of 52385517 is about 374.1712471324.

The spelling of 52385517 in words is "fifty-two million, three hundred eighty-five thousand, five hundred seventeen".