11045509 has 2 divisors, whose sum is σ = 11045510. Its totient is φ = 11045508.

The previous prime is 11045477. The next prime is 11045513. The reversal of 11045509 is 90554011.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10381284 + 664225 = 3222^2 + 815^2 .

It is a cyclic number.

It is not a de Polignac number, because 11045509 - 2⁵ = 11045477 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11055509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5522754 + 5522755.

It is an arithmetic number, because the mean of its divisors is an integer number (5522755).

Almost surely, 2^11045509 is an apocalyptic number.

It is an amenable number.

11045509 is a deficient number, since it is larger than the sum of its proper divisors (1).

11045509 is an equidigital number, since it uses as much as digits as its factorization.

11045509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 900, while the sum is 25.

The square root of 11045509 is about 3323.4784488545. The cubic root of 11045509 is about 222.7042874012.

The spelling of 11045509 in words is "eleven million, forty-five thousand, five hundred nine".