223415155 has 4 divisors (see below), whose sum is σ = 268098192. Its totient is φ = 178732120.

The previous prime is 223415119. The next prime is 223415177. The reversal of 223415155 is 551514322.

223415155 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, and also an emirpimes, since its reverse is a distinct semiprime: 551514322 = 2 ⋅275757161.

It is a de Polignac number, because none of the positive numbers 2^k-223415155 is a prime.

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, 22341511 + ... + 22341520.

It is an arithmetic number, because the mean of its divisors is an integer number (67024548).

Almost surely, 2^223415155 is an apocalyptic number.

223415155 is a deficient number, since it is larger than the sum of its proper divisors (44683037).

223415155 is an equidigital number, since it uses as much as digits as its factorization.

223415155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44683036.

The product of its digits is 6000, while the sum is 28.

The square root of 223415155 is about 14947.0784770804. The cubic root of 223415155 is about 606.7887819563.

Adding to 223415155 its reverse (551514322), we get a palindrome (774929477).

The spelling of 223415155 in words is "two hundred twenty-three million, four hundred fifteen thousand, one hundred fifty-five".