545430511321 has 2 divisors, whose sum is σ = 545430511322. Its totient is φ = 545430511320.

The previous prime is 545430511277. The next prime is 545430511337. The reversal of 545430511321 is 123115034545.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 314995950025 + 230434561296 = 561245^2 + 480036^2 .

It is a cyclic number.

It is not a de Polignac number, because 545430511321 - 2¹⁹ = 545429987033 is a prime.

It is not a weakly prime, because it can be changed into another prime (545430511721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 272715255660 + 272715255661.

It is an arithmetic number, because the mean of its divisors is an integer number (272715255661).

Almost surely, 2^545430511321 is an apocalyptic number.

It is an amenable number.

545430511321 is a deficient number, since it is larger than the sum of its proper divisors (1).

545430511321 is an equidigital number, since it uses as much as digits as its factorization.

545430511321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36000, while the sum is 34.

Adding to 545430511321 its reverse (123115034545), we get a palindrome (668545545866).

The spelling of 545430511321 in words is "five hundred forty-five billion, four hundred thirty million, five hundred eleven thousand, three hundred twenty-one".