11662171 has 2 divisors, whose sum is σ = 11662172. Its totient is φ = 11662170.

The previous prime is 11662151. The next prime is 11662177. The reversal of 11662171 is 17126611.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11662171 - 2⁷ = 11662043 is a prime.

It is not a weakly prime, because it can be changed into another prime (11662177) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5831085 + 5831086.

It is an arithmetic number, because the mean of its divisors is an integer number (5831086).

Almost surely, 2^11662171 is an apocalyptic number.

11662171 is a deficient number, since it is larger than the sum of its proper divisors (1).

11662171 is an equidigital number, since it uses as much as digits as its factorization.

11662171 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 504, while the sum is 25.

The square root of 11662171 is about 3414.9920936951. The cubic root of 11662171 is about 226.7739344746.

Adding to 11662171 its reverse (17126611), we get a palindrome (28788782).

The spelling of 11662171 in words is "eleven million, six hundred sixty-two thousand, one hundred seventy-one".