11555171 has 2 divisors, whose sum is σ = 11555172. Its totient is φ = 11555170.

The previous prime is 11555161. The next prime is 11555183. The reversal of 11555171 is 17155511.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11555171 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11555171.

It is not a weakly prime, because it can be changed into another prime (11555161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5777585 + 5777586.

It is an arithmetic number, because the mean of its divisors is an integer number (5777586).

Almost surely, 2^11555171 is an apocalyptic number.

11555171 is a deficient number, since it is larger than the sum of its proper divisors (1).

11555171 is an equidigital number, since it uses as much as digits as its factorization.

11555171 is an evil number, because the sum of its binary digits is even.

The product of its digits is 875, while the sum is 26.

The square root of 11555171 is about 3399.2897787626. The cubic root of 11555171 is about 226.0782549375.

The spelling of 11555171 in words is "eleven million, five hundred fifty-five thousand, one hundred seventy-one".