220155 has 16 divisors (see below), whose sum is σ = 379680. Its totient is φ = 108288.

The previous prime is 220151. The next prime is 220163. The reversal of 220155 is 551022.

It is not a de Polignac number, because 220155 - 2² = 220151 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is not an unprimeable number, because it can be changed into a prime (220151) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 370 + ... + 759.

It is an arithmetic number, because the mean of its divisors is an integer number (23730).

2²²⁰¹⁵⁵ is an apocalyptic number.

220155 is a deficient number, since it is larger than the sum of its proper divisors (159525).

220155 is a wasteful number, since it uses less digits than its factorization.

220155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1150.

The product of its (nonzero) digits is 100, while the sum is 15.

The square root of 220155 is about 469.2067774447. The cubic root of 220155 is about 60.3822813983.

Adding to 220155 its reverse (551022), we get a palindrome (771177).

The spelling of 220155 in words is "two hundred twenty thousand, one hundred fifty-five".