222424555 has 4 divisors (see below), whose sum is σ = 266909472. Its totient is φ = 177939640.

The previous prime is 222424547. The next prime is 222424561. The reversal of 222424555 is 555424222.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 555424222 = 2 ⋅277712111.

It is not a de Polignac number, because 222424555 - 2³ = 222424547 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 (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22242451 + ... + 22242460.

It is an arithmetic number, because the mean of its divisors is an integer number (66727368).

Almost surely, 2^222424555 is an apocalyptic number.

222424555 is a deficient number, since it is larger than the sum of its proper divisors (44484917).

222424555 is an equidigital number, since it uses as much as digits as its factorization.

222424555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44484916.

The product of its digits is 32000, while the sum is 31.

The square root of 222424555 is about 14913.9047536183. The cubic root of 222424555 is about 605.8906400414.

Adding to 222424555 its reverse (555424222), we get a palindrome (777848777).

The spelling of 222424555 in words is "two hundred twenty-two million, four hundred twenty-four thousand, five hundred fifty-five".