6548252021 has 2 divisors, whose sum is σ = 6548252022. Its totient is φ = 6548252020.

The previous prime is 6548251993. The next prime is 6548252027. The reversal of 6548252021 is 1202528456.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5394902500 + 1153349521 = 73450^2 + 33961^2 .

It is a cyclic number.

It is not a de Polignac number, because 6548252021 - 2¹⁴ = 6548235637 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6548252027) 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, 3274126010 + 3274126011.

It is an arithmetic number, because the mean of its divisors is an integer number (3274126011).

Almost surely, 2^6548252021 is an apocalyptic number.

It is an amenable number.

6548252021 is a deficient number, since it is larger than the sum of its proper divisors (1).

6548252021 is an equidigital number, since it uses as much as digits as its factorization.

6548252021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 38400, while the sum is 35.

The square root of 6548252021 is about 80921.2705102929. The cubic root of 6548252021 is about 1870.8621779444.

The spelling of 6548252021 in words is "six billion, five hundred forty-eight million, two hundred fifty-two thousand, twenty-one".