5221365517 has 2 divisors, whose sum is σ = 5221365518. Its totient is φ = 5221365516.

The previous prime is 5221365491. The next prime is 5221365521. The reversal of 5221365517 is 7155631225.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4328192521 + 893172996 = 65789^2 + 29886^2 .

It is a cyclic number.

It is not a de Polignac number, because 5221365517 - 2⁷ = 5221365389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5221365917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2610682758 + 2610682759.

It is an arithmetic number, because the mean of its divisors is an integer number (2610682759).

Almost surely, 2^5221365517 is an apocalyptic number.

It is an amenable number.

5221365517 is a deficient number, since it is larger than the sum of its proper divisors (1).

5221365517 is an equidigital number, since it uses as much as digits as its factorization.

5221365517 is an evil number, because the sum of its binary digits is even.

The product of its digits is 63000, while the sum is 37.

The square root of 5221365517 is about 72259.0168560298. The cubic root of 5221365517 is about 1734.8477435342.

The spelling of 5221365517 in words is "five billion, two hundred twenty-one million, three hundred sixty-five thousand, five hundred seventeen".