224012861 has 2 divisors, whose sum is σ = 224012862. Its totient is φ = 224012860.

The previous prime is 224012839. The next prime is 224012897. The reversal of 224012861 is 168210422.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 126990361 + 97022500 = 11269^2 + 9850^2 .

It is a cyclic number.

It is not a de Polignac number, because 224012861 - 2⁶ = 224012797 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 224012861.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (224012461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112006430 + 112006431.

It is an arithmetic number, because the mean of its divisors is an integer number (112006431).

Almost surely, 2^224012861 is an apocalyptic number.

It is an amenable number.

224012861 is a deficient number, since it is larger than the sum of its proper divisors (1).

224012861 is an equidigital number, since it uses as much as digits as its factorization.

224012861 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1536, while the sum is 26.

The square root of 224012861 is about 14967.0591967828. The cubic root of 224012861 is about 607.3294172392.

The spelling of 224012861 in words is "two hundred twenty-four million, twelve thousand, eight hundred sixty-one".