545221051213 has 2 divisors, whose sum is σ = 545221051214. Its totient is φ = 545221051212.

The previous prime is 545221051171. The next prime is 545221051229. The reversal of 545221051213 is 312150122545.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 534400474729 + 10820576484 = 731027^2 + 104022^2 .

It is a cyclic number.

It is not a de Polignac number, because 545221051213 - 2¹³ = 545221043021 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (545221051283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 272610525606 + 272610525607.

It is an arithmetic number, because the mean of its divisors is an integer number (272610525607).

Almost surely, 2^545221051213 is an apocalyptic number.

It is an amenable number.

545221051213 is a deficient number, since it is larger than the sum of its proper divisors (1).

545221051213 is an equidigital number, since it uses as much as digits as its factorization.

545221051213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12000, while the sum is 31.

Adding to 545221051213 its reverse (312150122545), we get a palindrome (857371173758).

The spelling of 545221051213 in words is "five hundred forty-five billion, two hundred twenty-one million, fifty-one thousand, two hundred thirteen".