22052409 has 8 divisors (see below), whose sum is σ = 29628192. Its totient is φ = 14589120.

The previous prime is 22052347. The next prime is 22052431. The reversal of 22052409 is 90425022.

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

It is not a de Polignac number, because 22052409 - 2¹⁷ = 21921337 is a prime.

It is a Smith number, since the sum of its digits (24) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (22052809) 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 7 ways as a sum of consecutive naturals, for example, 27664 + ... + 28449.

It is an arithmetic number, because the mean of its divisors is an integer number (3703524).

Almost surely, 2^22052409 is an apocalyptic number.

It is an amenable number.

22052409 is a deficient number, since it is larger than the sum of its proper divisors (7575783).

22052409 is a wasteful number, since it uses less digits than its factorization.

22052409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56247.

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 22052409 is about 4695.9992546848. Note that the first 3 decimals coincide. The cubic root of 22052409 is about 280.4262597651.

The spelling of 22052409 in words is "twenty-two million, fifty-two thousand, four hundred nine".