220452655 has 4 divisors (see below), whose sum is σ = 264543192. Its totient is φ = 176362120.

The previous prime is 220452647. The next prime is 220452679. The reversal of 220452655 is 556254022.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 556254022 = 2 ⋅278127011.

It is not a de Polignac number, because 220452655 - 2³ = 220452647 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent 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, 22045261 + ... + 22045270.

It is an arithmetic number, because the mean of its divisors is an integer number (66135798).

Almost surely, 2^220452655 is an apocalyptic number.

220452655 is a deficient number, since it is larger than the sum of its proper divisors (44090537).

220452655 is an equidigital number, since it uses as much as digits as its factorization.

220452655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44090536.

The product of its (nonzero) digits is 24000, while the sum is 31.

The square root of 220452655 is about 14847.6481302596. The cubic root of 220452655 is about 604.0948192221.

The spelling of 220452655 in words is "two hundred twenty million, four hundred fifty-two thousand, six hundred fifty-five".