220143155 has 16 divisors (see below), whose sum is σ = 272160864. Its totient is φ = 170818560.

The previous prime is 220143151. The next prime is 220143167. The reversal of 220143155 is 551341022.

It is not a de Polignac number, because 220143155 - 2² = 220143151 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 220143155.

It is not an unprimeable number, because it can be changed into a prime (220143151) 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, 63620 + ... + 66990.

It is an arithmetic number, because the mean of its divisors is an integer number (17010054).

Almost surely, 2^220143155 is an apocalyptic number.

220143155 is a deficient number, since it is larger than the sum of its proper divisors (52017709).

220143155 is a wasteful number, since it uses less digits than its factorization.

220143155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3766.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 220143155 is about 14837.2219434772. The cubic root of 220143155 is about 603.8119846286.

Adding to 220143155 its reverse (551341022), we get a palindrome (771484177).

The spelling of 220143155 in words is "two hundred twenty million, one hundred forty-three thousand, one hundred fifty-five".