224642251 has 2 divisors, whose sum is σ = 224642252. Its totient is φ = 224642250.

The previous prime is 224642189. The next prime is 224642293. The reversal of 224642251 is 152246422.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 224642251 - 2⁷ = 224642123 is a prime.

It is not a weakly prime, because it can be changed into another prime (224652251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112321125 + 112321126.

It is an arithmetic number, because the mean of its divisors is an integer number (112321126).

Almost surely, 2^224642251 is an apocalyptic number.

224642251 is a deficient number, since it is larger than the sum of its proper divisors (1).

224642251 is an equidigital number, since it uses as much as digits as its factorization.

224642251 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7680, while the sum is 28.

The square root of 224642251 is about 14988.0702894002. The cubic root of 224642251 is about 607.8976727535.

Adding to 224642251 its reverse (152246422), we get a palindrome (376888673).

The spelling of 224642251 in words is "two hundred twenty-four million, six hundred forty-two thousand, two hundred fifty-one".