183066221 has 8 divisors (see below), whose sum is σ = 197338680. Its totient is φ = 168820992.

The previous prime is 183066173. The next prime is 183066227. The reversal of 183066221 is 122660381.

It can be written as a sum of positive squares in 4 ways, for example, as 546121 + 182520100 = 739^2 + 13510^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 183066221 - 2⁶ = 183066157 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (183066227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8441 + ... + 20913.

It is an arithmetic number, because the mean of its divisors is an integer number (24667335).

Almost surely, 2^183066221 is an apocalyptic number.

It is an amenable number.

183066221 is a deficient number, since it is larger than the sum of its proper divisors (14272459).

183066221 is a wasteful number, since it uses less digits than its factorization.

183066221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13615.

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 183066221 is about 13530.1966356739. The cubic root of 183066221 is about 567.8096104030.

The spelling of 183066221 in words is "one hundred eighty-three million, sixty-six thousand, two hundred twenty-one".