45218717 has 2 divisors, whose sum is σ = 45218718. Its totient is φ = 45218716.

The previous prime is 45218707. The next prime is 45218729. The reversal of 45218717 is 71781254.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 39677401 + 5541316 = 6299^2 + 2354^2 .

It is a cyclic number.

It is not a de Polignac number, because 45218717 - 2¹⁰ = 45217693 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45218707) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22609358 + 22609359.

It is an arithmetic number, because the mean of its divisors is an integer number (22609359).

Almost surely, 2^45218717 is an apocalyptic number.

It is an amenable number.

45218717 is a deficient number, since it is larger than the sum of its proper divisors (1).

45218717 is an equidigital number, since it uses as much as digits as its factorization.

45218717 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15680, while the sum is 35.

The square root of 45218717 is about 6724.4863744378. The cubic root of 45218717 is about 356.2646608515.

The spelling of 45218717 in words is "forty-five million, two hundred eighteen thousand, seven hundred seventeen".