45305665 has 4 divisors (see below), whose sum is σ = 54366804. Its totient is φ = 36244528.

The previous prime is 45305651. The next prime is 45305677. The reversal of 45305665 is 56650354.

45305665 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.

It can be written as a sum of positive squares in 2 ways, for example, as 27531009 + 17774656 = 5247^2 + 4216^2 .

It is a cyclic number.

It is not a de Polignac number, because 45305665 - 2⁷ = 45305537 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 45305665.

It is an unprimeable number.

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, 4530562 + ... + 4530571.

It is an arithmetic number, because the mean of its divisors is an integer number (13591701).

Almost surely, 2^45305665 is an apocalyptic number.

It is an amenable number.

45305665 is a deficient number, since it is larger than the sum of its proper divisors (9061139).

45305665 is an equidigital number, since it uses as much as digits as its factorization.

45305665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9061138.

The product of its (nonzero) digits is 54000, while the sum is 34.

The square root of 45305665 is about 6730.9482987169. The cubic root of 45305665 is about 356.4928603580.

The spelling of 45305665 in words is "forty-five million, three hundred five thousand, six hundred sixty-five".