512452130444521 has 2 divisors, whose sum is σ = 512452130444522. Its totient is φ = 512452130444520.

The previous prime is 512452130444483. The next prime is 512452130444561. The reversal of 512452130444521 is 125444031254215.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 471765133224025 + 40686997220496 = 21720155^2 + 6378636^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-512452130444521 is a prime.

It is not a weakly prime, because it can be changed into another prime (512452130444561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 256226065222260 + 256226065222261.

It is an arithmetic number, because the mean of its divisors is an integer number (256226065222261).

Almost surely, 2^{512452130444521} is an apocalyptic number.

It is an amenable number.

512452130444521 is a deficient number, since it is larger than the sum of its proper divisors (1).

512452130444521 is an equidigital number, since it uses as much as digits as its factorization.

512452130444521 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 768000, while the sum is 43.

Adding to 512452130444521 its reverse (125444031254215), we get a palindrome (637896161698736).

The spelling of 512452130444521 in words is "five hundred twelve trillion, four hundred fifty-two billion, one hundred thirty million, four hundred forty-four thousand, five hundred twenty-one".