22054409 has 4 divisors (see below), whose sum is σ = 23750916. Its totient is φ = 20357904.

The previous prime is 22054393. The next prime is 22054427. The reversal of 22054409 is 90445022.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 10220809 + 11833600 = 3197^2 + 3440^2 .

It is a cyclic number.

It is not a de Polignac number, because 22054409 - 2⁴ = 22054393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22054429) 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, 848234 + ... + 848259.

It is an arithmetic number, because the mean of its divisors is an integer number (5937729).

Almost surely, 2^22054409 is an apocalyptic number.

It is an amenable number.

22054409 is a deficient number, since it is larger than the sum of its proper divisors (1696507).

22054409 is a wasteful number, since it uses less digits than its factorization.

22054409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1696506.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 22054409 is about 4696.2121970797. The cubic root of 22054409 is about 280.4347370787.

It can be divided in two parts, 2205 and 4409, that multiplied together give a triangular number (9721845 = T₄₄₀₉).

The spelling of 22054409 in words is "twenty-two million, fifty-four thousand, four hundred nine".