224215361 has 2 divisors, whose sum is σ = 224215362. Its totient is φ = 224215360.

The previous prime is 224215309. The next prime is 224215393. The reversal of 224215361 is 163512422.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 224070961 + 144400 = 14969^2 + 380^2 .

It is a cyclic number.

It is not a de Polignac number, because 224215361 - 2¹⁸ = 223953217 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 224215361.

It is not a weakly prime, because it can be changed into another prime (224215861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112107680 + 112107681.

It is an arithmetic number, because the mean of its divisors is an integer number (112107681).

Almost surely, 2^224215361 is an apocalyptic number.

It is an amenable number.

224215361 is a deficient number, since it is larger than the sum of its proper divisors (1).

224215361 is an equidigital number, since it uses as much as digits as its factorization.

224215361 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2880, while the sum is 26.

The square root of 224215361 is about 14973.8225246595. The cubic root of 224215361 is about 607.5123638302.

Adding to 224215361 its reverse (163512422), we get a palindrome (387727783).

The spelling of 224215361 in words is "two hundred twenty-four million, two hundred fifteen thousand, three hundred sixty-one".