1050509 has 2 divisors, whose sum is σ = 1050510. Its totient is φ = 1050508.

The previous prime is 1050503. The next prime is 1050523. The reversal of 1050509 is 9050501.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 624100 + 426409 = 790^2 + 653^2 .

It is an emirp because it is prime and its reverse (9050501) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1050509 - 2⁸ = 1050253 is a prime.

It is a super-2 number, since 2×1050509² = 2207138318162, which contains 22 as substring.

It is a Sophie Germain prime.

It is an alternating number because its digits alternate between odd and even.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1050503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 525254 + 525255.

It is an arithmetic number, because the mean of its divisors is an integer number (525255).

2^1050509 is an apocalyptic number.

It is an amenable number.

1050509 is a deficient number, since it is larger than the sum of its proper divisors (1).

1050509 is an equidigital number, since it uses as much as digits as its factorization.

1050509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 225, while the sum is 20.

The square root of 1050509 is about 1024.9434130722. The cubic root of 1050509 is about 101.6560567028.

The spelling of 1050509 in words is "one million, fifty thousand, five hundred nine".