45388217 has 4 divisors (see below), whose sum is σ = 51872256. Its totient is φ = 38904180.

The previous prime is 45388157. The next prime is 45388243. The reversal of 45388217 is 71288354.

45388217 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 not a de Polignac number, because 45388217 - 2¹⁶ = 45322681 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45388297) 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, 3242009 + ... + 3242022.

It is an arithmetic number, because the mean of its divisors is an integer number (12968064).

Almost surely, 2^45388217 is an apocalyptic number.

It is an amenable number.

45388217 is a deficient number, since it is larger than the sum of its proper divisors (6484039).

45388217 is an equidigital number, since it uses as much as digits as its factorization.

45388217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6484038.

The product of its digits is 53760, while the sum is 38.

The square root of 45388217 is about 6737.0777789781. The cubic root of 45388217 is about 356.7092522981.

The spelling of 45388217 in words is "forty-five million, three hundred eighty-eight thousand, two hundred seventeen".