220555155 has 8 divisors (see below), whose sum is σ = 352888272. Its totient is φ = 117629408.

The previous prime is 220555151. The next prime is 220555177. The reversal of 220555155 is 551555022.

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 220555155 - 2² = 220555151 is a prime.

It is not an unprimeable number, because it can be changed into a prime (220555151) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7351824 + ... + 7351853.

It is an arithmetic number, because the mean of its divisors is an integer number (44111034).

Almost surely, 2^220555155 is an apocalyptic number.

220555155 is a deficient number, since it is larger than the sum of its proper divisors (132333117).

220555155 is a wasteful number, since it uses less digits than its factorization.

220555155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14703685.

The product of its (nonzero) digits is 12500, while the sum is 30.

The square root of 220555155 is about 14851.0994542492. The cubic root of 220555155 is about 604.1884298357.

The spelling of 220555155 in words is "two hundred twenty million, five hundred fifty-five thousand, one hundred fifty-five".