45218218 has 8 divisors (see below), whose sum is σ = 69660612. Its totient is φ = 21998016.

The previous prime is 45218213. The next prime is 45218219. The reversal of 45218218 is 81281254.

It can be written as a sum of positive squares in 2 ways, for example, as 44395569 + 822649 = 6663^2 + 907^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 45218218.

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 3 ways as a sum of consecutive naturals, for example, 305455 + ... + 305602.

Almost surely, 2^45218218 is an apocalyptic number.

45218218 is a deficient number, since it is larger than the sum of its proper divisors (24442394).

45218218 is a wasteful number, since it uses less digits than its factorization.

45218218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 611096.

The product of its digits is 5120, while the sum is 31.

The square root of 45218218 is about 6724.4492711299. The cubic root of 45218218 is about 356.2633503564.

The spelling of 45218218 in words is "forty-five million, two hundred eighteen thousand, two hundred eighteen".