224999 has 4 divisors (see below), whose sum is σ = 228240. Its totient is φ = 221760.

The previous prime is 224993. The next prime is 225023. The reversal of 224999 is 999422.

224999 is nontrivially palindromic in base 4.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 999422 = 2 ⋅499711.

It is a cyclic number.

It is not a de Polignac number, because 224999 - 2⁸ = 224743 is a prime.

It is a Duffinian number.

224999 is a modest number, since divided by 999 gives 224 as remainder.

It is a plaindrome in base 10 and base 15.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 224999.

It is not an unprimeable number, because it can be changed into a prime (224993) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 1514 + ... + 1655.

It is an arithmetic number, because the mean of its divisors is an integer number (57060).

2²²⁴⁹⁹⁹ is an apocalyptic number.

224999 is a deficient number, since it is larger than the sum of its proper divisors (3241).

224999 is an equidigital number, since it uses as much as digits as its factorization.

224999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3240.

The product of its digits is 11664, while the sum is 35.

The square root of 224999 is about 474.3405949315. The cubic root of 224999 is about 60.8219298489.

The spelling of 224999 in words is "two hundred twenty-four thousand, nine hundred ninety-nine".