52104533521 has 4 divisors (see below), whose sum is σ = 53375375844. Its totient is φ = 50833691200.

The previous prime is 52104533513. The next prime is 52104533539. The reversal of 52104533521 is 12533540125.

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 3831610000 + 48272923521 = 61900^2 + 219711^2 .

It is a cyclic number.

It is not a de Polignac number, because 52104533521 - 2³ = 52104533513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52104533581) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 635421100 + ... + 635421181.

It is an arithmetic number, because the mean of its divisors is an integer number (13343843961).

Almost surely, 2^52104533521 is an apocalyptic number.

It is an amenable number.

52104533521 is a deficient number, since it is larger than the sum of its proper divisors (1270842323).

52104533521 is a wasteful number, since it uses less digits than its factorization.

52104533521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1270842322.

The product of its (nonzero) digits is 18000, while the sum is 31.

The spelling of 52104533521 in words is "fifty-two billion, one hundred four million, five hundred thirty-three thousand, five hundred twenty-one".