224481 has 4 divisors (see below), whose sum is σ = 299312. Its totient is φ = 149652.

The previous prime is 224473. The next prime is 224491. The reversal of 224481 is 184422.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 224481 - 2³ = 224473 is a prime.

It is a super-2 number, since 2×224481² = 100783438722, which contains 22 as substring.

It is a D-number.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 224481.

It is not an unprimeable number, because it can be changed into a prime (224401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37411 + ... + 37416.

It is an arithmetic number, because the mean of its divisors is an integer number (74828).

2²²⁴⁴⁸¹ is an apocalyptic number.

It is an amenable number.

224481 is a deficient number, since it is larger than the sum of its proper divisors (74831).

224481 is an equidigital number, since it uses as much as digits as its factorization.

224481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74830.

The product of its digits is 512, while the sum is 21.

The square root of 224481 is about 473.7942591463. The cubic root of 224481 is about 60.7752185769.

The spelling of 224481 in words is "two hundred twenty-four thousand, four hundred eighty-one".