52121535543 has 72 divisors (see below), whose sum is σ = 101160193680. Its totient is φ = 25483368960.

The previous prime is 52121535523. The next prime is 52121535581. The reversal of 52121535543 is 34553512125.

52121535543 is a `hidden beast` number, since 52 + 1 + 2 + 1 + 53 + 554 + 3 = 666.

It is not a de Polignac number, because 52121535543 - 2⁵ = 52121535511 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 52121535498 and 52121535507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52121535503) 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 71 ways as a sum of consecutive naturals, for example, 233548 + ... + 398481.

It is an arithmetic number, because the mean of its divisors is an integer number (1405002690).

Almost surely, 2^52121535543 is an apocalyptic number.

52121535543 is a deficient number, since it is larger than the sum of its proper divisors (49038658137).

52121535543 is a wasteful number, since it uses less digits than its factorization.

52121535543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 632077 (or 632067 counting only the distinct ones).

The product of its digits is 90000, while the sum is 36.

The spelling of 52121535543 in words is "fifty-two billion, one hundred twenty-one million, five hundred thirty-five thousand, five hundred forty-three".