5220243134257 has 2 divisors, whose sum is σ = 5220243134258. Its totient is φ = 5220243134256.

The previous prime is 5220243134209. The next prime is 5220243134273. The reversal of 5220243134257 is 7524313420225.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4392172254001 + 828070880256 = 2095751^2 + 909984^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5220243134257 is a prime.

It is not a weakly prime, because it can be changed into another prime (5220243134207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2610121567128 + 2610121567129.

It is an arithmetic number, because the mean of its divisors is an integer number (2610121567129).

Almost surely, 2^{5220243134257} is an apocalyptic number.

It is an amenable number.

5220243134257 is a deficient number, since it is larger than the sum of its proper divisors (1).

5220243134257 is an equidigital number, since it uses as much as digits as its factorization.

5220243134257 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 403200, while the sum is 40.

The spelling of 5220243134257 in words is "five trillion, two hundred twenty billion, two hundred forty-three million, one hundred thirty-four thousand, two hundred fifty-seven".