22406455 has 4 divisors (see below), whose sum is σ = 26887752. Its totient is φ = 17925160.

The previous prime is 22406429. The next prime is 22406467. The reversal of 22406455 is 55460422.

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

It is not a de Polignac number, because 22406455 - 2⁷ = 22406327 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2240641 + ... + 2240650.

It is an arithmetic number, because the mean of its divisors is an integer number (6721938).

Almost surely, 2^22406455 is an apocalyptic number.

22406455 is a deficient number, since it is larger than the sum of its proper divisors (4481297).

22406455 is an equidigital number, since it uses as much as digits as its factorization.

22406455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4481296.

The product of its (nonzero) digits is 9600, while the sum is 28.

The square root of 22406455 is about 4733.5457111979. The cubic root of 22406455 is about 281.9190242495.

Adding to 22406455 its reverse (55460422), we get a palindrome (77866877).

The spelling of 22406455 in words is "twenty-two million, four hundred six thousand, four hundred fifty-five".