11053409 has 4 divisors (see below), whose sum is σ = 11534016. Its totient is φ = 10572804.

The previous prime is 11053373. The next prime is 11053411. The reversal of 11053409 is 90435011.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 11053409 - 2⁸ = 11053153 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23), and also a Moran number because the ratio is a prime number: 480583 = 11053409 / (1 + 1 + 0 + 5 + 3 + 4 + 0 + 9).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11053909) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 240269 + ... + 240314.

It is an arithmetic number, because the mean of its divisors is an integer number (2883504).

Almost surely, 2^11053409 is an apocalyptic number.

It is an amenable number.

11053409 is a deficient number, since it is larger than the sum of its proper divisors (480607).

11053409 is an equidigital number, since it uses as much as digits as its factorization.

11053409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 480606.

The product of its (nonzero) digits is 540, while the sum is 23.

The square root of 11053409 is about 3324.6667502172. Note that the first 3 decimals coincide. The cubic root of 11053409 is about 222.7573691436.

The spelling of 11053409 in words is "eleven million, fifty-three thousand, four hundred nine".