220454555 has 16 divisors (see below), whose sum is σ = 281250144. Its totient is φ = 165312000.

The previous prime is 220454543. The next prime is 220454569. The reversal of 220454555 is 555454022.

It is not a de Polignac number, because 220454555 - 2⁴ = 220454539 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 15 ways as a sum of consecutive naturals, for example, 16169 + ... + 26501.

It is an arithmetic number, because the mean of its divisors is an integer number (17578134).

Almost surely, 2^220454555 is an apocalyptic number.

220454555 is a deficient number, since it is larger than the sum of its proper divisors (60795589).

220454555 is a wasteful number, since it uses less digits than its factorization.

220454555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10606.

The product of its (nonzero) digits is 40000, while the sum is 32.

The square root of 220454555 is about 14847.7121133190. The cubic root of 220454555 is about 604.0965547072.

The spelling of 220454555 in words is "two hundred twenty million, four hundred fifty-four thousand, five hundred fifty-five".