115120609 has 2 divisors, whose sum is σ = 115120610. Its totient is φ = 115120608.

The previous prime is 115120597. The next prime is 115120657. The reversal of 115120609 is 906021511.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 115089984 + 30625 = 10728^2 + 175^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-115120609 is a prime.

It is not a weakly prime, because it can be changed into another prime (115120009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57560304 + 57560305.

It is an arithmetic number, because the mean of its divisors is an integer number (57560305).

Almost surely, 2^115120609 is an apocalyptic number.

It is an amenable number.

115120609 is a deficient number, since it is larger than the sum of its proper divisors (1).

115120609 is an equidigital number, since it uses as much as digits as its factorization.

115120609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 540, while the sum is 25.

The square root of 115120609 is about 10729.4272447321. The cubic root of 115120609 is about 486.4643580102.

The spelling of 115120609 in words is "one hundred fifteen million, one hundred twenty thousand, six hundred nine".