11055809 has 8 divisors (see below), whose sum is σ = 11454720. Its totient is φ = 10659600.

The previous prime is 11055791. The next prime is 11055817. The reversal of 11055809 is 90855011.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11055809 - 2⁸ = 11055553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11055829) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11279 + ... + 12219.

It is an arithmetic number, because the mean of its divisors is an integer number (1431840).

Almost surely, 2^11055809 is an apocalyptic number.

It is an amenable number.

11055809 is a deficient number, since it is larger than the sum of its proper divisors (398911).

11055809 is an equidigital number, since it uses as much as digits as its factorization.

11055809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1351.

The product of its (nonzero) digits is 1800, while the sum is 29.

The square root of 11055809 is about 3325.0276690578. The cubic root of 11055809 is about 222.7734902334.

The spelling of 11055809 in words is "eleven million, fifty-five thousand, eight hundred nine".