224155 has 8 divisors (see below), whose sum is σ = 271872. Its totient is φ = 177408.

The previous prime is 224153. The next prime is 224171. The reversal of 224155 is 551422.

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 224155 - 2¹ = 224153 is a prime.

It is a Duffinian number.

224155 is a lucky number.

It is a nialpdrome in base 12.

It is not an unprimeable number, because it can be changed into a prime (224153) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 459 + ... + 811.

It is an arithmetic number, because the mean of its divisors is an integer number (33984).

2²²⁴¹⁵⁵ is an apocalyptic number.

224155 is a deficient number, since it is larger than the sum of its proper divisors (47717).

224155 is a wasteful number, since it uses less digits than its factorization.

224155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 485.

The product of its digits is 400, while the sum is 19.

The square root of 224155 is about 473.4501029676. The cubic root of 224155 is about 60.7457842819.

Adding to 224155 its reverse (551422), we get a palindrome (775577).

The spelling of 224155 in words is "two hundred twenty-four thousand, one hundred fifty-five".