115804861 has 2 divisors, whose sum is σ = 115804862. Its totient is φ = 115804860.

The previous prime is 115804849. The next prime is 115804879. The reversal of 115804861 is 168408511.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 110880900 + 4923961 = 10530^2 + 2219^2 .

It is a cyclic number.

It is not a de Polignac number, because 115804861 - 2⁹ = 115804349 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (115804811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57902430 + 57902431.

It is an arithmetic number, because the mean of its divisors is an integer number (57902431).

Almost surely, 2^115804861 is an apocalyptic number.

It is an amenable number.

115804861 is a deficient number, since it is larger than the sum of its proper divisors (1).

115804861 is an equidigital number, since it uses as much as digits as its factorization.

115804861 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7680, while the sum is 34.

The square root of 115804861 is about 10761.2667005330. The cubic root of 115804861 is about 487.4262677005.

The spelling of 115804861 in words is "one hundred fifteen million, eight hundred four thousand, eight hundred sixty-one".