538211717 has 2 divisors, whose sum is σ = 538211718. Its totient is φ = 538211716.

The previous prime is 538211701. The next prime is 538211743. The reversal of 538211717 is 717112835.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 446645956 + 91565761 = 21134^2 + 9569^2 .

It is a cyclic number.

It is not a de Polignac number, because 538211717 - 2⁴ = 538211701 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (538511717) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 269105858 + 269105859.

It is an arithmetic number, because the mean of its divisors is an integer number (269105859).

Almost surely, 2^538211717 is an apocalyptic number.

It is an amenable number.

538211717 is a deficient number, since it is larger than the sum of its proper divisors (1).

538211717 is an equidigital number, since it uses as much as digits as its factorization.

538211717 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11760, while the sum is 35.

The square root of 538211717 is about 23199.3904445785. The cubic root of 538211717 is about 813.4253747661.

The spelling of 538211717 in words is "five hundred thirty-eight million, two hundred eleven thousand, seven hundred seventeen".