2220455155 has 4 divisors (see below), whose sum is σ = 2664546192. Its totient is φ = 1776364120.

The previous prime is 2220455141. The next prime is 2220455183. The reversal of 2220455155 is 5515540222.

It is a happy number.

2220455155 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 2220455155 - 2²⁷ = 2086237427 is a prime.

It is a super-3 number, since 3×2220455155³ (a number of 29 digits) contains 333 as substring.

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 an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 222045511 + ... + 222045520.

It is an arithmetic number, because the mean of its divisors is an integer number (666136548).

Almost surely, 2^2220455155 is an apocalyptic number.

2220455155 is a deficient number, since it is larger than the sum of its proper divisors (444091037).

2220455155 is an equidigital number, since it uses as much as digits as its factorization.

2220455155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 444091036.

The product of its (nonzero) digits is 20000, while the sum is 31.

The square root of 2220455155 is about 47121.7057734543. The cubic root of 2220455155 is about 1304.6098969526.

Adding to 2220455155 its reverse (5515540222), we get a palindrome (7735995377).

The spelling of 2220455155 in words is "two billion, two hundred twenty million, four hundred fifty-five thousand, one hundred fifty-five".