118561171 has 2 divisors, whose sum is σ = 118561172. Its totient is φ = 118561170.

The previous prime is 118561151. The next prime is 118561199. The reversal of 118561171 is 171165811.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 118561171 - 2⁵ = 118561139 is a prime.

It is not a weakly prime, because it can be changed into another prime (118561141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 59280585 + 59280586.

It is an arithmetic number, because the mean of its divisors is an integer number (59280586).

Almost surely, 2^118561171 is an apocalyptic number.

118561171 is a deficient number, since it is larger than the sum of its proper divisors (1).

118561171 is an equidigital number, since it uses as much as digits as its factorization.

118561171 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1680, while the sum is 31.

The square root of 118561171 is about 10888.5798431200. The cubic root of 118561171 is about 491.2631176585.

The spelling of 118561171 in words is "one hundred eighteen million, five hundred sixty-one thousand, one hundred seventy-one".