115778141 has 2 divisors, whose sum is σ = 115778142. Its totient is φ = 115778140.

The previous prime is 115778101. The next prime is 115778189. The reversal of 115778141 is 141877511.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 86304100 + 29474041 = 9290^2 + 5429^2 .

It is a cyclic number.

It is not a de Polignac number, because 115778141 - 2¹⁰ = 115777117 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (115778101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57889070 + 57889071.

It is an arithmetic number, because the mean of its divisors is an integer number (57889071).

Almost surely, 2^115778141 is an apocalyptic number.

It is an amenable number.

115778141 is a deficient number, since it is larger than the sum of its proper divisors (1).

115778141 is an equidigital number, since it uses as much as digits as its factorization.

115778141 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7840, while the sum is 35.

The square root of 115778141 is about 10760.0251393758. The cubic root of 115778141 is about 487.3887763794.

The spelling of 115778141 in words is "one hundred fifteen million, seven hundred seventy-eight thousand, one hundred forty-one".