11106509 has 4 divisors (see below), whose sum is σ = 11139804. Its totient is φ = 11073216.

The previous prime is 11106467. The next prime is 11106527. The reversal of 11106509 is 90560111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 90560111 = 229 ⋅395459.

It can be written as a sum of positive squares in 2 ways, for example, as 7672900 + 3433609 = 2770^2 + 1853^2 .

It is a cyclic number.

It is not a de Polignac number, because 11106509 - 2²⁰ = 10057933 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11106409) 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 in 3 ways as a sum of consecutive naturals, for example, 16142 + ... + 16815.

It is an arithmetic number, because the mean of its divisors is an integer number (2784951).

Almost surely, 2^11106509 is an apocalyptic number.

It is an amenable number.

11106509 is a deficient number, since it is larger than the sum of its proper divisors (33295).

11106509 is an equidigital number, since it uses as much as digits as its factorization.

11106509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33294.

The product of its (nonzero) digits is 270, while the sum is 23.

The square root of 11106509 is about 3332.6429451713. The cubic root of 11106509 is about 223.1135043914.

The spelling of 11106509 in words is "eleven million, one hundred six thousand, five hundred nine".