116551181 has 2 divisors, whose sum is σ = 116551182. Its totient is φ = 116551180.

The previous prime is 116551163. The next prime is 116551207. The reversal of 116551181 is 181155611.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 111302500 + 5248681 = 10550^2 + 2291^2 .

It is a cyclic number.

It is not a de Polignac number, because 116551181 - 2²⁶ = 49442317 is a prime.

It is a super-2 number, since 2×116551181² = 27168355584989522, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (116551121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58275590 + 58275591.

It is an arithmetic number, because the mean of its divisors is an integer number (58275591).

Almost surely, 2^116551181 is an apocalyptic number.

It is an amenable number.

116551181 is a deficient number, since it is larger than the sum of its proper divisors (1).

116551181 is an equidigital number, since it uses as much as digits as its factorization.

116551181 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1200, while the sum is 29.

The square root of 116551181 is about 10795.8872261616. The cubic root of 116551181 is about 488.4711210490.

The spelling of 116551181 in words is "one hundred sixteen million, five hundred fifty-one thousand, one hundred eighty-one".