180004217 has 2 divisors, whose sum is σ = 180004218. Its totient is φ = 180004216.

The previous prime is 180004207. The next prime is 180004243. The reversal of 180004217 is 712400081.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 166306816 + 13697401 = 12896^2 + 3701^2 .

It is a cyclic number.

It is not a de Polignac number, because 180004217 - 2²² = 175809913 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 180004192 and 180004201.

It is not a weakly prime, because it can be changed into another prime (180004207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 90002108 + 90002109.

It is an arithmetic number, because the mean of its divisors is an integer number (90002109).

Almost surely, 2^180004217 is an apocalyptic number.

It is an amenable number.

180004217 is a deficient number, since it is larger than the sum of its proper divisors (1).

180004217 is an equidigital number, since it uses as much as digits as its factorization.

180004217 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 448, while the sum is 23.

The square root of 180004217 is about 13416.5650223893. The cubic root of 180004217 is about 564.6260265708.

Adding to 180004217 its reverse (712400081), we get a palindrome (892404298).

The spelling of 180004217 in words is "one hundred eighty million, four thousand, two hundred seventeen".