224204861 has 2 divisors, whose sum is σ = 224204862. Its totient is φ = 224204860.

The previous prime is 224204837. The next prime is 224204873. The reversal of 224204861 is 168402422.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 207648100 + 16556761 = 14410^2 + 4069^2 .

It is a cyclic number.

It is not a de Polignac number, because 224204861 - 2¹⁴ = 224188477 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (224254861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112102430 + 112102431.

It is an arithmetic number, because the mean of its divisors is an integer number (112102431).

Almost surely, 2^224204861 is an apocalyptic number.

It is an amenable number.

224204861 is a deficient number, since it is larger than the sum of its proper divisors (1).

224204861 is an equidigital number, since it uses as much as digits as its factorization.

224204861 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6144, while the sum is 29.

The square root of 224204861 is about 14973.4719086790. The cubic root of 224204861 is about 607.5028804190.

The spelling of 224204861 in words is "two hundred twenty-four million, two hundred four thousand, eight hundred sixty-one".