45218 has 8 divisors (see below), whose sum is σ = 70848. Its totient is φ = 21604.

The previous prime is 45197. The next prime is 45233. The reversal of 45218 is 81254.

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

It is an alternating number because its digits alternate between even and odd.

It is a Curzon number.

It is a plaindrome in base 7 and base 14.

It is a self number, because there is not a number n which added to its sum of digits gives 45218.

It is an unprimeable number.

45218 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 446 + ... + 537.

It is an arithmetic number, because the mean of its divisors is an integer number (8856).

2⁴⁵²¹⁸ is an apocalyptic number.

45218 is a deficient number, since it is larger than the sum of its proper divisors (25630).

45218 is a wasteful number, since it uses less digits than its factorization.

45218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1008.

The product of its digits is 320, while the sum is 20.

The square root of 45218 is about 212.6452444801. The cubic root of 45218 is about 35.6262777832.

The spelling of 45218 in words is "forty-five thousand, two hundred eighteen".