5221365917 has 2 divisors, whose sum is σ = 5221365918. Its totient is φ = 5221365916.

The previous prime is 5221365899. The next prime is 5221365983. The reversal of 5221365917 is 7195631225.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5025533881 + 195832036 = 70891^2 + 13994^2 .

It is a cyclic number.

It is not a de Polignac number, because 5221365917 - 2¹⁸ = 5221103773 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5221365517) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2610682958 + 2610682959.

It is an arithmetic number, because the mean of its divisors is an integer number (2610682959).

Almost surely, 2^5221365917 is an apocalyptic number.

It is an amenable number.

5221365917 is a deficient number, since it is larger than the sum of its proper divisors (1).

5221365917 is an equidigital number, since it uses as much as digits as its factorization.

5221365917 is an evil number, because the sum of its binary digits is even.

The product of its digits is 113400, while the sum is 41.

The square root of 5221365917 is about 72259.0196238504. The cubic root of 5221365917 is about 1734.8477878355.

The spelling of 5221365917 in words is "five billion, two hundred twenty-one million, three hundred sixty-five thousand, nine hundred seventeen".