52873409521 has 4 divisors (see below), whose sum is σ = 52875728500. Its totient is φ = 52871090544.

The previous prime is 52873409507. The next prime is 52873409531. The reversal of 52873409521 is 12590437825.

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 30898608400 + 21974801121 = 175780^2 + 148239^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-52873409521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52873409531) 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, 1124946 + ... + 1171003.

It is an arithmetic number, because the mean of its divisors is an integer number (13218932125).

Almost surely, 2^52873409521 is an apocalyptic number.

It is an amenable number.

52873409521 is a deficient number, since it is larger than the sum of its proper divisors (2318979).

52873409521 is a wasteful number, since it uses less digits than its factorization.

52873409521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2318978.

The product of its (nonzero) digits is 604800, while the sum is 46.

The spelling of 52873409521 in words is "fifty-two billion, eight hundred seventy-three million, four hundred nine thousand, five hundred twenty-one".