52165240531 has 4 divisors (see below), whose sum is σ = 52183312432. Its totient is φ = 52147168632.

The previous prime is 52165240529. The next prime is 52165240549. The reversal of 52165240531 is 13504256125.

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

It is a cyclic number.

It is not a de Polignac number, because 52165240531 - 2¹ = 52165240529 is a prime.

It is a super-2 number, since 2×52165240531² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52165640531) 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 3 ways as a sum of consecutive naturals, for example, 9031620 + ... + 9037393.

It is an arithmetic number, because the mean of its divisors is an integer number (13045828108).

Almost surely, 2^52165240531 is an apocalyptic number.

52165240531 is a deficient number, since it is larger than the sum of its proper divisors (18071901).

52165240531 is a wasteful number, since it uses less digits than its factorization.

52165240531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18071900.

The product of its (nonzero) digits is 36000, while the sum is 34.

Adding to 52165240531 its reverse (13504256125), we get a palindrome (65669496656).

The spelling of 52165240531 in words is "fifty-two billion, one hundred sixty-five million, two hundred forty thousand, five hundred thirty-one".