16617149 has 2 divisors, whose sum is σ = 16617150. Its totient is φ = 16617148.

The previous prime is 16617137. The next prime is 16617151. The reversal of 16617149 is 94171661.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14707225 + 1909924 = 3835^2 + 1382^2 .

It is an emirp because it is prime and its reverse (94171661) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16617149 - 2²⁰ = 15568573 is a prime.

It is a super-2 number, since 2×16617149² = 552259281776402, which contains 22 as substring.

Together with 16617151, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16617949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8308574 + 8308575.

It is an arithmetic number, because the mean of its divisors is an integer number (8308575).

Almost surely, 2^16617149 is an apocalyptic number.

It is an amenable number.

16617149 is a deficient number, since it is larger than the sum of its proper divisors (1).

16617149 is an equidigital number, since it uses as much as digits as its factorization.

16617149 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9072, while the sum is 35.

The square root of 16617149 is about 4076.4137424947. The cubic root of 16617149 is about 255.1832541512.

The spelling of 16617149 in words is "sixteen million, six hundred seventeen thousand, one hundred forty-nine".