11500217 has 2 divisors, whose sum is σ = 11500218. Its totient is φ = 11500216.

The previous prime is 11500189. The next prime is 11500219. The reversal of 11500217 is 71200511.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6817321 + 4682896 = 2611^2 + 2164^2 .

It is an emirp because it is prime and its reverse (71200511) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11500217 - 2¹⁶ = 11434681 is a prime.

Together with 11500219, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 11500195 and 11500204.

It is not a weakly prime, because it can be changed into another prime (11500219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5750108 + 5750109.

It is an arithmetic number, because the mean of its divisors is an integer number (5750109).

Almost surely, 2^11500217 is an apocalyptic number.

It is an amenable number.

11500217 is a deficient number, since it is larger than the sum of its proper divisors (1).

11500217 is an equidigital number, since it uses as much as digits as its factorization.

11500217 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 70, while the sum is 17.

The square root of 11500217 is about 3391.1969863162. The cubic root of 11500217 is about 225.7192914975.

Adding to 11500217 its reverse (71200511), we get a palindrome (82700728).

The spelling of 11500217 in words is "eleven million, five hundred thousand, two hundred seventeen".