45218705 has 8 divisors (see below), whose sum is σ = 62014272. Its totient is φ = 31007088.

The previous prime is 45218647. The next prime is 45218707. The reversal of 45218705 is 50781254.

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

It is not a de Polignac number, because 45218705 - 2¹⁰ = 45217681 is a prime.

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

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (45218707) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 645947 + ... + 646016.

It is an arithmetic number, because the mean of its divisors is an integer number (7751784).

Almost surely, 2^45218705 is an apocalyptic number.

It is an amenable number.

45218705 is a deficient number, since it is larger than the sum of its proper divisors (16795567).

45218705 is a wasteful number, since it uses less digits than its factorization.

45218705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1291975.

The product of its (nonzero) digits is 11200, while the sum is 32.

The square root of 45218705 is about 6724.4854821763. The cubic root of 45218705 is about 356.2646293367.

Adding to 45218705 its reverse (50781254), we get a palindrome (95999959).

The spelling of 45218705 in words is "forty-five million, two hundred eighteen thousand, seven hundred five".