52152431321 has 4 divisors (see below), whose sum is σ = 52338027444. Its totient is φ = 51966835200.

The previous prime is 52152431273. The next prime is 52152431323. The reversal of 52152431321 is 12313425125.

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 24755560921 + 27396870400 = 157339^2 + 165520^2 .

It is a cyclic number.

It is not a de Polignac number, because 52152431321 - 2³⁴ = 34972562137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52152431323) 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, 92797640 + ... + 92798201.

It is an arithmetic number, because the mean of its divisors is an integer number (13084506861).

Almost surely, 2^52152431321 is an apocalyptic number.

It is an amenable number.

52152431321 is a deficient number, since it is larger than the sum of its proper divisors (185596123).

52152431321 is a wasteful number, since it uses less digits than its factorization.

52152431321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185596122.

The product of its digits is 7200, while the sum is 29.

Adding to 52152431321 its reverse (12313425125), we get a palindrome (64465856446).

The spelling of 52152431321 in words is "fifty-two billion, one hundred fifty-two million, four hundred thirty-one thousand, three hundred twenty-one".