45518217 has 4 divisors (see below), whose sum is σ = 60690960. Its totient is φ = 30345476.

The previous prime is 45518189. The next prime is 45518227. The reversal of 45518217 is 71281554.

45518217 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 45518217 - 2⁶ = 45518153 is a prime.

It is not an unprimeable number, because it can be changed into a prime (45518227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7586367 + ... + 7586372.

It is an arithmetic number, because the mean of its divisors is an integer number (15172740).

Almost surely, 2^45518217 is an apocalyptic number.

It is an amenable number.

45518217 is a deficient number, since it is larger than the sum of its proper divisors (15172743).

45518217 is a wasteful number, since it uses less digits than its factorization.

45518217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15172742.

The product of its digits is 11200, while the sum is 33.

The square root of 45518217 is about 6746.7189803637. The cubic root of 45518217 is about 357.0494874472.

The spelling of 45518217 in words is "forty-five million, five hundred eighteen thousand, two hundred seventeen".