4545303253021 has 2 divisors, whose sum is σ = 4545303253022. Its totient is φ = 4545303253020.

The previous prime is 4545303252989. The next prime is 4545303253093. The reversal of 4545303253021 is 1203523035454.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4340497224996 + 204806028025 = 2083386^2 + 452555^2 .

It is a cyclic number.

It is not a de Polignac number, because 4545303253021 - 2⁵ = 4545303252989 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4545303253721) 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 as a sum of consecutive naturals, namely, 2272651626510 + 2272651626511.

It is an arithmetic number, because the mean of its divisors is an integer number (2272651626511).

Almost surely, 2^{4545303253021} is an apocalyptic number.

It is an amenable number.

4545303253021 is a deficient number, since it is larger than the sum of its proper divisors (1).

4545303253021 is an equidigital number, since it uses as much as digits as its factorization.

4545303253021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216000, while the sum is 37.

Adding to 4545303253021 its reverse (1203523035454), we get a palindrome (5748826288475).

The spelling of 4545303253021 in words is "four trillion, five hundred forty-five billion, three hundred three million, two hundred fifty-three thousand, twenty-one".