510245542021 has 2 divisors, whose sum is σ = 510245542022. Its totient is φ = 510245542020.

The previous prime is 510245541977. The next prime is 510245542073. The reversal of 510245542021 is 120245542015.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 291908961796 + 218336580225 = 540286^2 + 467265^2 .

It is a cyclic number.

It is not a de Polignac number, because 510245542021 - 2²⁵ = 510211987589 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (510245242021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 255122771010 + 255122771011.

It is an arithmetic number, because the mean of its divisors is an integer number (255122771011).

Almost surely, 2^510245542021 is an apocalyptic number.

It is an amenable number.

510245542021 is a deficient number, since it is larger than the sum of its proper divisors (1).

510245542021 is an equidigital number, since it uses as much as digits as its factorization.

510245542021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16000, while the sum is 31.

The spelling of 510245542021 in words is "five hundred ten billion, two hundred forty-five million, five hundred forty-two thousand, twenty-one".