52544420521 has 4 divisors (see below), whose sum is σ = 52695845712. Its totient is φ = 52392995332.

The previous prime is 52544420503. The next prime is 52544420527. The reversal of 52544420521 is 12502444525.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 52544420521 - 2¹¹ = 52544418473 is a prime.

It is a super-2 number, since 2×52544420521² (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 (52544420527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 75712075 + ... + 75712768.

It is an arithmetic number, because the mean of its divisors is an integer number (13173961428).

Almost surely, 2^52544420521 is an apocalyptic number.

It is an amenable number.

52544420521 is a deficient number, since it is larger than the sum of its proper divisors (151425191).

52544420521 is a wasteful number, since it uses less digits than its factorization.

52544420521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151425190.

The product of its (nonzero) digits is 64000, while the sum is 34.

The spelling of 52544420521 in words is "fifty-two billion, five hundred forty-four million, four hundred twenty thousand, five hundred twenty-one".