45180217 has 2 divisors, whose sum is σ = 45180218. Its totient is φ = 45180216.

The previous prime is 45180209. The next prime is 45180259. The reversal of 45180217 is 71208154.

45180217 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 35295481 + 9884736 = 5941^2 + 3144^2 .

It is a cyclic number.

It is not a de Polignac number, because 45180217 - 2³ = 45180209 is a prime.

It is not a weakly prime, because it can be changed into another prime (45180277) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22590108 + 22590109.

It is an arithmetic number, because the mean of its divisors is an integer number (22590109).

Almost surely, 2^45180217 is an apocalyptic number.

It is an amenable number.

45180217 is a deficient number, since it is larger than the sum of its proper divisors (1).

45180217 is an equidigital number, since it uses as much as digits as its factorization.

45180217 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2240, while the sum is 28.

The square root of 45180217 is about 6721.6230926764. The cubic root of 45180217 is about 356.1635221717.

The spelling of 45180217 in words is "forty-five million, one hundred eighty thousand, two hundred seventeen".