224813 has 2 divisors, whose sum is σ = 224814. Its totient is φ = 224812.

The previous prime is 224797. The next prime is 224831. The reversal of 224813 is 318422.

Together with next prime (224831) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 218089 + 6724 = 467^2 + 82^2 .

It is a cyclic number.

It is not a de Polignac number, because 224813 - 2⁴ = 224797 is a prime.

It is a Chen prime.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (224863) 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 as a sum of consecutive naturals, namely, 112406 + 112407.

It is an arithmetic number, because the mean of its divisors is an integer number (112407).

2²²⁴⁸¹³ is an apocalyptic number.

It is an amenable number.

224813 is a deficient number, since it is larger than the sum of its proper divisors (1).

224813 is an equidigital number, since it uses as much as digits as its factorization.

224813 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 384, while the sum is 20.

The square root of 224813 is about 474.1444927446. The cubic root of 224813 is about 60.8051653333.

The spelling of 224813 in words is "two hundred twenty-four thousand, eight hundred thirteen".