1050505009 has 2 divisors, whose sum is σ = 1050505010. Its totient is φ = 1050505008.

The previous prime is 1050504991. The next prime is 1050505033. The reversal of 1050505009 is 9005050501.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 913731984 + 136773025 = 30228^2 + 11695^2 .

It is a cyclic number.

It is not a de Polignac number, because 1050505009 - 2⁵ = 1050504977 is a prime.

It is a super-2 number, since 2×1050505009² = 2207121547868180162, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1050505069) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 525252504 + 525252505.

It is an arithmetic number, because the mean of its divisors is an integer number (525252505).

Almost surely, 2^1050505009 is an apocalyptic number.

It is an amenable number.

1050505009 is a deficient number, since it is larger than the sum of its proper divisors (1).

1050505009 is an equidigital number, since it uses as much as digits as its factorization.

1050505009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1125, while the sum is 25.

The square root of 1050505009 is about 32411.4950133436. The cubic root of 1050505009 is about 1016.5592796844.

The spelling of 1050505009 in words is "one billion, fifty million, five hundred five thousand, nine".