115541161 has 2 divisors, whose sum is σ = 115541162. Its totient is φ = 115541160.

The previous prime is 115541141. The next prime is 115541183. The reversal of 115541161 is 161145511.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 67322025 + 48219136 = 8205^2 + 6944^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-115541161 is a prime.

It is not a weakly prime, because it can be changed into another prime (115541141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57770580 + 57770581.

It is an arithmetic number, because the mean of its divisors is an integer number (57770581).

Almost surely, 2^115541161 is an apocalyptic number.

It is an amenable number.

115541161 is a deficient number, since it is larger than the sum of its proper divisors (1).

115541161 is an equidigital number, since it uses as much as digits as its factorization.

115541161 is an evil number, because the sum of its binary digits is even.

The product of its digits is 600, while the sum is 25.

The square root of 115541161 is about 10749.0074425502. The cubic root of 115541161 is about 487.0560126830.

Adding to 115541161 its reverse (161145511), we get a palindrome (276686672).

The spelling of 115541161 in words is "one hundred fifteen million, five hundred forty-one thousand, one hundred sixty-one".