224291861 has 2 divisors, whose sum is σ = 224291862. Its totient is φ = 224291860.

The previous prime is 224291857. The next prime is 224291869. The reversal of 224291861 is 168192422.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 224070961 + 220900 = 14969^2 + 470^2 .

It is a cyclic number.

It is not a de Polignac number, because 224291861 - 2² = 224291857 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (224291869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112145930 + 112145931.

It is an arithmetic number, because the mean of its divisors is an integer number (112145931).

Almost surely, 2^224291861 is an apocalyptic number.

It is an amenable number.

224291861 is a deficient number, since it is larger than the sum of its proper divisors (1).

224291861 is an equidigital number, since it uses as much as digits as its factorization.

224291861 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13824, while the sum is 35.

The square root of 224291861 is about 14976.3767647586. The cubic root of 224291861 is about 607.5814483197.

The spelling of 224291861 in words is "two hundred twenty-four million, two hundred ninety-one thousand, eight hundred sixty-one".