1105555589 has 2 divisors, whose sum is σ = 1105555590. Its totient is φ = 1105555588.

The previous prime is 1105555541. The next prime is 1105555609. The reversal of 1105555589 is 9855555011.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 606390625 + 499164964 = 24625^2 + 22342^2 .

It is an emirp because it is prime and its reverse (9855555011) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1105555589 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1105555519) 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, 552777794 + 552777795.

It is an arithmetic number, because the mean of its divisors is an integer number (552777795).

Almost surely, 2^1105555589 is an apocalyptic number.

It is an amenable number.

1105555589 is a deficient number, since it is larger than the sum of its proper divisors (1).

1105555589 is an equidigital number, since it uses as much as digits as its factorization.

1105555589 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 225000, while the sum is 44.

The square root of 1105555589 is about 33249.8960750256. The cubic root of 1105555589 is about 1034.0150537112.

The spelling of 1105555589 in words is "one billion, one hundred five million, five hundred fifty-five thousand, five hundred eighty-nine".