52521111321 has 8 divisors (see below), whose sum is σ = 80032169664. Its totient is φ = 30012063600.

The previous prime is 52521111311. The next prime is 52521111353. The reversal of 52521111321 is 12311112525.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 52521111321 - 2⁶ = 52521111257 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 52521111291 and 52521111300.

It is not an unprimeable number, because it can be changed into a prime (52521111311) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1250502630 + ... + 1250502671.

It is an arithmetic number, because the mean of its divisors is an integer number (10004021208).

Almost surely, 2^52521111321 is an apocalyptic number.

It is an amenable number.

52521111321 is a deficient number, since it is larger than the sum of its proper divisors (27511058343).

52521111321 is a wasteful number, since it uses less digits than its factorization.

52521111321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2501005311.

The product of its digits is 600, while the sum is 24.

Adding to 52521111321 its reverse (12311112525), we get a palindrome (64832223846).

The spelling of 52521111321 in words is "fifty-two billion, five hundred twenty-one million, one hundred eleven thousand, three hundred twenty-one".