22005455 has 8 divisors (see below), whose sum is σ = 26440800. Its totient is φ = 17581536.

The previous prime is 22005449. The next prime is 22005499. The reversal of 22005455 is 55450022.

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 22005455 - 2⁸ = 22005199 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22005455.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2201 + ... + 6989.

It is an arithmetic number, because the mean of its divisors is an integer number (3305100).

Almost surely, 2^22005455 is an apocalyptic number.

22005455 is a deficient number, since it is larger than the sum of its proper divisors (4435345).

22005455 is an equidigital number, since it uses as much as digits as its factorization.

22005455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5713.

The product of its (nonzero) digits is 2000, while the sum is 23.

The square root of 22005455 is about 4690.9972287351. The cubic root of 22005455 is about 280.2270904313.

Adding to 22005455 its reverse (55450022), we get a palindrome (77455477).

The spelling of 22005455 in words is "twenty-two million, five thousand, four hundred fifty-five".