2220155 has 16 divisors (see below), whose sum is σ = 3069120. Its totient is φ = 1510272.

The previous prime is 2220151. The next prime is 2220157. The reversal of 2220155 is 5510222.

2220155 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 2220155 - 2² = 2220151 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2220151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7877 + ... + 8153.

It is an arithmetic number, because the mean of its divisors is an integer number (191820).

2^2220155 is an apocalyptic number.

2220155 is a deficient number, since it is larger than the sum of its proper divisors (848965).

2220155 is a wasteful number, since it uses less digits than its factorization.

2220155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 518.

The product of its (nonzero) digits is 200, while the sum is 17.

The square root of 2220155 is about 1490.0184562615. The cubic root of 2220155 is about 130.4551109782.

Adding to 2220155 its reverse (5510222), we get a palindrome (7730377).

The spelling of 2220155 in words is "two million, two hundred twenty thousand, one hundred fifty-five".