2220545555 has 16 divisors (see below), whose sum is σ = 2677417824. Its totient is φ = 1767951360.

The previous prime is 2220545549. The next prime is 2220545623. The reversal of 2220545555 is 5555450222.

It is not a de Polignac number, because 2220545555 - 2⁴ = 2220545539 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1099907 + ... + 1101923.

It is an arithmetic number, because the mean of its divisors is an integer number (167338614).

Almost surely, 2^2220545555 is an apocalyptic number.

2220545555 is a deficient number, since it is larger than the sum of its proper divisors (456872269).

2220545555 is a wasteful number, since it uses less digits than its factorization.

2220545555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2966.

The product of its (nonzero) digits is 100000, while the sum is 35.

The square root of 2220545555 is about 47122.6649819384. The cubic root of 2220545555 is about 1304.6276013009.

Adding to 2220545555 its reverse (5555450222), we get a palindrome (7775995777).

The spelling of 2220545555 in words is "two billion, two hundred twenty million, five hundred forty-five thousand, five hundred fifty-five".