224220555 has 80 divisors (see below), whose sum is σ = 444939264. Its totient is φ = 107308800.

The previous prime is 224220553. The next prime is 224220571. The reversal of 224220555 is 555022422.

It is not a de Polignac number, because 224220555 - 2¹ = 224220553 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (224220553) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 194230 + ... + 195380.

Almost surely, 2^224220555 is an apocalyptic number.

224220555 is a deficient number, since it is larger than the sum of its proper divisors (220718709).

224220555 is a wasteful number, since it uses less digits than its factorization.

224220555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1218 (or 1209 counting only the distinct ones).

The product of its (nonzero) digits is 8000, while the sum is 27.

The square root of 224220555 is about 14973.9959596629. The cubic root of 224220555 is about 607.5170548481.

Adding to 224220555 its reverse (555022422), we get a palindrome (779242977).

The spelling of 224220555 in words is "two hundred twenty-four million, two hundred twenty thousand, five hundred fifty-five".