1105235561 has 2 divisors, whose sum is σ = 1105235562. Its totient is φ = 1105235560.

The previous prime is 1105235497. The next prime is 1105235609. The reversal of 1105235561 is 1655325011.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 828345961 + 276889600 = 28781^2 + 16640^2 .

It is a cyclic number.

It is not a de Polignac number, because 1105235561 - 2⁶ = 1105235497 is a prime.

It is not a weakly prime, because it can be changed into another prime (1105235861) 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, 552617780 + 552617781.

It is an arithmetic number, because the mean of its divisors is an integer number (552617781).

Almost surely, 2^1105235561 is an apocalyptic number.

It is an amenable number.

1105235561 is a deficient number, since it is larger than the sum of its proper divisors (1).

1105235561 is an equidigital number, since it uses as much as digits as its factorization.

1105235561 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4500, while the sum is 29.

The square root of 1105235561 is about 33245.0832605364. The cubic root of 1105235561 is about 1033.9152710897.

The spelling of 1105235561 in words is "one billion, one hundred five million, two hundred thirty-five thousand, five hundred sixty-one".