115603861 has 2 divisors, whose sum is σ = 115603862. Its totient is φ = 115603860.

The previous prime is 115603853. The next prime is 115603871. The reversal of 115603861 is 168306511.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 85562500 + 30041361 = 9250^2 + 5481^2 .

It is a cyclic number.

It is not a de Polignac number, because 115603861 - 2³ = 115603853 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (115603871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57801930 + 57801931.

It is an arithmetic number, because the mean of its divisors is an integer number (57801931).

Almost surely, 2^115603861 is an apocalyptic number.

It is an amenable number.

115603861 is a deficient number, since it is larger than the sum of its proper divisors (1).

115603861 is an equidigital number, since it uses as much as digits as its factorization.

115603861 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4320, while the sum is 31.

The square root of 115603861 is about 10751.9235953386. The cubic root of 115603861 is about 487.1440992990.

The spelling of 115603861 in words is "one hundred fifteen million, six hundred three thousand, eight hundred sixty-one".