220455505 has 8 divisors (see below), whose sum is σ = 266025600. Its totient is φ = 175378416.

The previous prime is 220455503. The next prime is 220455511. The reversal of 220455505 is 505554022.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 220455505 - 2¹ = 220455503 is a prime.

It is not an unprimeable number, because it can be changed into a prime (220455503) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 122265 + ... + 124054.

It is an arithmetic number, because the mean of its divisors is an integer number (33253200).

Almost surely, 2^220455505 is an apocalyptic number.

It is an amenable number.

220455505 is a deficient number, since it is larger than the sum of its proper divisors (45570095).

220455505 is a wasteful number, since it uses less digits than its factorization.

220455505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 246503.

The product of its (nonzero) digits is 10000, while the sum is 28.

The square root of 220455505 is about 14847.7441047453. The cubic root of 220455505 is about 604.0974224460.

The spelling of 220455505 in words is "two hundred twenty million, four hundred fifty-five thousand, five hundred five".