45217218 has 16 divisors (see below), whose sum is σ = 94366656. Its totient is φ = 14417040.

The previous prime is 45217199. The next prime is 45217231. The reversal of 45217218 is 81271254.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 163693 + ... + 163968.

It is an arithmetic number, because the mean of its divisors is an integer number (5897916).

Almost surely, 2^45217218 is an apocalyptic number.

45217218 is an abundant number, since it is smaller than the sum of its proper divisors (49149438).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

45217218 is a wasteful number, since it uses less digits than its factorization.

45217218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 327689.

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

The square root of 45217218 is about 6724.3749151873. The cubic root of 45217218 is about 356.2607240847.

The spelling of 45217218 in words is "forty-five million, two hundred seventeen thousand, two hundred eighteen".