226183721 has 2 divisors, whose sum is σ = 226183722. Its totient is φ = 226183720.

The previous prime is 226183717. The next prime is 226183747. The reversal of 226183721 is 127381622.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 226051225 + 132496 = 15035^2 + 364^2 .

It is a cyclic number.

It is not a de Polignac number, because 226183721 - 2² = 226183717 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (226183751) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 113091860 + 113091861.

It is an arithmetic number, because the mean of its divisors is an integer number (113091861).

Almost surely, 2^226183721 is an apocalyptic number.

It is an amenable number.

226183721 is a deficient number, since it is larger than the sum of its proper divisors (1).

226183721 is an equidigital number, since it uses as much as digits as its factorization.

226183721 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8064, while the sum is 32.

The square root of 226183721 is about 15039.4056066056. The cubic root of 226183721 is about 609.2849464155.

The spelling of 226183721 in words is "two hundred twenty-six million, one hundred eighty-three thousand, seven hundred twenty-one".