52445405321 has 2 divisors, whose sum is σ = 52445405322. Its totient is φ = 52445405320.

The previous prime is 52445405267. The next prime is 52445405333. The reversal of 52445405321 is 12350454425.

52445405321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 51073740025 + 1371665296 = 225995^2 + 37036^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-52445405321 is a prime.

It is a super-2 number, since 2×52445405321² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (52445405381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26222702660 + 26222702661.

It is an arithmetic number, because the mean of its divisors is an integer number (26222702661).

Almost surely, 2^52445405321 is an apocalyptic number.

It is an amenable number.

52445405321 is a deficient number, since it is larger than the sum of its proper divisors (1).

52445405321 is an equidigital number, since it uses as much as digits as its factorization.

52445405321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96000, while the sum is 35.

Adding to 52445405321 its reverse (12350454425), we get a palindrome (64795859746).

The spelling of 52445405321 in words is "fifty-two billion, four hundred forty-five million, four hundred five thousand, three hundred twenty-one".