224310521 has 2 divisors, whose sum is σ = 224310522. Its totient is φ = 224310520.

The previous prime is 224310497. The next prime is 224310533. The reversal of 224310521 is 125013422.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 214476025 + 9834496 = 14645^2 + 3136^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-224310521 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 224310493 and 224310502.

It is not a weakly prime, because it can be changed into another prime (224310721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112155260 + 112155261.

It is an arithmetic number, because the mean of its divisors is an integer number (112155261).

Almost surely, 2^224310521 is an apocalyptic number.

It is an amenable number.

224310521 is a deficient number, since it is larger than the sum of its proper divisors (1).

224310521 is an equidigital number, since it uses as much as digits as its factorization.

224310521 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 224310521 is about 14976.9997329238. Note that the first 3 decimals coincide. The cubic root of 224310521 is about 607.5982971335.

Adding to 224310521 its reverse (125013422), we get a palindrome (349323943).

The spelling of 224310521 in words is "two hundred twenty-four million, three hundred ten thousand, five hundred twenty-one".