115565641 has 2 divisors, whose sum is σ = 115565642. Its totient is φ = 115565640.

The previous prime is 115565633. The next prime is 115565651. The reversal of 115565641 is 146565511.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 114575616 + 990025 = 10704^2 + 995^2 .

It is a cyclic number.

It is not a de Polignac number, because 115565641 - 2³ = 115565633 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 115565597 and 115565606.

It is not a weakly prime, because it can be changed into another prime (115565651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57782820 + 57782821.

It is an arithmetic number, because the mean of its divisors is an integer number (57782821).

Almost surely, 2^115565641 is an apocalyptic number.

It is an amenable number.

115565641 is a deficient number, since it is larger than the sum of its proper divisors (1).

115565641 is an equidigital number, since it uses as much as digits as its factorization.

115565641 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18000, while the sum is 34.

The square root of 115565641 is about 10750.1460920306. The cubic root of 115565641 is about 487.0904081865.

The spelling of 115565641 in words is "one hundred fifteen million, five hundred sixty-five thousand, six hundred forty-one".