224915 has 4 divisors (see below), whose sum is σ = 269904. Its totient is φ = 179928.

The previous prime is 224911. The next prime is 224921. The reversal of 224915 is 519422.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 224915 - 2² = 224911 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (224911) 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 3 ways as a sum of consecutive naturals, for example, 22487 + ... + 22496.

It is an arithmetic number, because the mean of its divisors is an integer number (67476).

2²²⁴⁹¹⁵ is an apocalyptic number.

224915 is a deficient number, since it is larger than the sum of its proper divisors (44989).

224915 is an equidigital number, since it uses as much as digits as its factorization.

224915 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44988.

The product of its digits is 720, while the sum is 23.

The square root of 224915 is about 474.2520426946. The cubic root of 224915 is about 60.8143599219.

The spelling of 224915 in words is "two hundred twenty-four thousand, nine hundred fifteen".