224452421 has 2 divisors, whose sum is σ = 224452422. Its totient is φ = 224452420.

The previous prime is 224452273. The next prime is 224452433. The reversal of 224452421 is 124254422.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 147889921 + 76562500 = 12161^2 + 8750^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-224452421 is a prime.

It is a super-2 number, since 2×224452421² = 100757778585522482, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (224452441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112226210 + 112226211.

It is an arithmetic number, because the mean of its divisors is an integer number (112226211).

Almost surely, 2^224452421 is an apocalyptic number.

It is an amenable number.

224452421 is a deficient number, since it is larger than the sum of its proper divisors (1).

224452421 is an equidigital number, since it uses as much as digits as its factorization.

224452421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5120, while the sum is 26.

The square root of 224452421 is about 14981.7362478452. The cubic root of 224452421 is about 607.7263934048.

The spelling of 224452421 in words is "two hundred twenty-four million, four hundred fifty-two thousand, four hundred twenty-one".