45218217 has 16 divisors (see below), whose sum is σ = 65891520. Its totient is φ = 27355200.

The previous prime is 45218213. The next prime is 45218219. The reversal of 45218217 is 71281254.

It is not a de Polignac number, because 45218217 - 2² = 45218213 is a prime.

It is not an unprimeable number, because it can be changed into a prime (45218213) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26259 + ... + 27927.

It is an arithmetic number, because the mean of its divisors is an integer number (4118220).

Almost surely, 2^45218217 is an apocalyptic number.

It is an amenable number.

45218217 is a deficient number, since it is larger than the sum of its proper divisors (20673303).

45218217 is a wasteful number, since it uses less digits than its factorization.

45218217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2504.

The product of its digits is 4480, while the sum is 30.

The square root of 45218217 is about 6724.4491967744. The cubic root of 45218217 is about 356.2633477301.

The spelling of 45218217 in words is "forty-five million, two hundred eighteen thousand, two hundred seventeen".