224004181 has 2 divisors, whose sum is σ = 224004182. Its totient is φ = 224004180.

The previous prime is 224004173. The next prime is 224004211. The reversal of 224004181 is 181400422.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 201356100 + 22648081 = 14190^2 + 4759^2 .

It is a cyclic number.

It is not a de Polignac number, because 224004181 - 2³ = 224004173 is a prime.

It is a super-2 number, since 2×224004181² = 100355746210961522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (224004161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112002090 + 112002091.

It is an arithmetic number, because the mean of its divisors is an integer number (112002091).

Almost surely, 2^224004181 is an apocalyptic number.

It is an amenable number.

224004181 is a deficient number, since it is larger than the sum of its proper divisors (1).

224004181 is an equidigital number, since it uses as much as digits as its factorization.

224004181 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 512, while the sum is 22.

The square root of 224004181 is about 14966.7692238506. The cubic root of 224004181 is about 607.3215729167.

The spelling of 224004181 in words is "two hundred twenty-four million, four thousand, one hundred eighty-one".