180550221 has 8 divisors (see below), whose sum is σ = 240996480. Its totient is φ = 120235392.

The previous prime is 180550219. The next prime is 180550229. The reversal of 180550221 is 122055081.

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

It is not a de Polignac number, because 180550221 - 2¹ = 180550219 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 180550191 and 180550200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (180550229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29605 + ... + 35178.

It is an arithmetic number, because the mean of its divisors is an integer number (30124560).

Almost surely, 2^180550221 is an apocalyptic number.

It is an amenable number.

180550221 is a deficient number, since it is larger than the sum of its proper divisors (60446259).

180550221 is an equidigital number, since it uses as much as digits as its factorization.

180550221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65715.

The product of its (nonzero) digits is 800, while the sum is 24.

The square root of 180550221 is about 13436.8977446433. The cubic root of 180550221 is about 565.1963407739.

The spelling of 180550221 in words is "one hundred eighty million, five hundred fifty thousand, two hundred twenty-one".