224987 has 4 divisors (see below), whose sum is σ = 257136. Its totient is φ = 192840.

The previous prime is 224977. The next prime is 224993. The reversal of 224987 is 789422.

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 224987 - 2¹⁰ = 223963 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (224947) 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, 16064 + ... + 16077.

It is an arithmetic number, because the mean of its divisors is an integer number (64284).

2²²⁴⁹⁸⁷ is an apocalyptic number.

224987 is a deficient number, since it is larger than the sum of its proper divisors (32149).

224987 is an equidigital number, since it uses as much as digits as its factorization.

224987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32148.

The product of its digits is 8064, while the sum is 32.

The square root of 224987 is about 474.3279456241. The cubic root of 224987 is about 60.8208485461.

The spelling of 224987 in words is "two hundred twenty-four thousand, nine hundred eighty-seven".