10218517 has 2 divisors, whose sum is σ = 10218518. Its totient is φ = 10218516.

The previous prime is 10218497. The next prime is 10218521. The reversal of 10218517 is 71581201.

10218517 is nontrivially palindromic in base 14.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7365796 + 2852721 = 2714^2 + 1689^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10218517 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 10218491 and 10218500.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10218557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5109258 + 5109259.

It is an arithmetic number, because the mean of its divisors is an integer number (5109259).

Almost surely, 2^10218517 is an apocalyptic number.

It is an amenable number.

10218517 is a deficient number, since it is larger than the sum of its proper divisors (1).

10218517 is an equidigital number, since it uses as much as digits as its factorization.

10218517 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 560, while the sum is 25.

The square root of 10218517 is about 3196.6415188444. The cubic root of 10218517 is about 217.0014440644.

Adding to 10218517 its reverse (71581201), we get a palindrome (81799718).

The spelling of 10218517 in words is "ten million, two hundred eighteen thousand, five hundred seventeen".