220415155 has 8 divisors (see below), whose sum is σ = 264578832. Its totient is φ = 176278368.

The previous prime is 220415147. The next prime is 220415161. The reversal of 220415155 is 551514022.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 220415155 - 2³ = 220415147 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24537 + ... + 32293.

It is an arithmetic number, because the mean of its divisors is an integer number (33072354).

Almost surely, 2^220415155 is an apocalyptic number.

220415155 is a deficient number, since it is larger than the sum of its proper divisors (44163677).

220415155 is an equidigital number, since it uses as much as digits as its factorization.

220415155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13445.

The product of its (nonzero) digits is 2000, while the sum is 25.

The square root of 220415155 is about 14846.3852502890. The cubic root of 220415155 is about 604.0605641870.

Adding to 220415155 its reverse (551514022), we get a palindrome (771929177).

The spelling of 220415155 in words is "two hundred twenty million, four hundred fifteen thousand, one hundred fifty-five".