11871157 has 2 divisors, whose sum is σ = 11871158. Its totient is φ = 11871156.

The previous prime is 11871133. The next prime is 11871161. The reversal of 11871157 is 75117811.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8916196 + 2954961 = 2986^2 + 1719^2 .

It is a cyclic number.

It is not a de Polignac number, because 11871157 - 2¹⁵ = 11838389 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11871107) 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, 5935578 + 5935579.

It is an arithmetic number, because the mean of its divisors is an integer number (5935579).

Almost surely, 2^11871157 is an apocalyptic number.

It is an amenable number.

11871157 is a deficient number, since it is larger than the sum of its proper divisors (1).

11871157 is an equidigital number, since it uses as much as digits as its factorization.

11871157 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1960, while the sum is 31.

The square root of 11871157 is about 3445.4545418566. The cubic root of 11871157 is about 228.1205182581.

Adding to 11871157 its reverse (75117811), we get a palindrome (86988968).

The spelling of 11871157 in words is "eleven million, eight hundred seventy-one thousand, one hundred fifty-seven".