224420555 has 4 divisors (see below), whose sum is σ = 269304672. Its totient is φ = 179536440.

The previous prime is 224420549. The next prime is 224420597. The reversal of 224420555 is 555024422.

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

It is not a de Polignac number, because 224420555 - 2⁶ = 224420491 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 22442051 + ... + 22442060.

It is an arithmetic number, because the mean of its divisors is an integer number (67326168).

Almost surely, 2^224420555 is an apocalyptic number.

224420555 is a deficient number, since it is larger than the sum of its proper divisors (44884117).

224420555 is an equidigital number, since it uses as much as digits as its factorization.

224420555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44884116.

The product of its (nonzero) digits is 16000, while the sum is 29.

The square root of 224420555 is about 14980.6727152021. The cubic root of 224420555 is about 607.6976319629.

Adding to 224420555 its reverse (555024422), we get a palindrome (779444977).

The spelling of 224420555 in words is "two hundred twenty-four million, four hundred twenty thousand, five hundred fifty-five".