45664945 has 4 divisors (see below), whose sum is σ = 54797940. Its totient is φ = 36531952.

The previous prime is 45664933. The next prime is 45664963. The reversal of 45664945 is 54946654.

45664945 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 25441936 + 20223009 = 5044^2 + 4497^2 .

It is a cyclic number.

It is not a de Polignac number, because 45664945 - 2¹⁵ = 45632177 is a prime.

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, 4566490 + ... + 4566499.

It is an arithmetic number, because the mean of its divisors is an integer number (13699485).

Almost surely, 2^45664945 is an apocalyptic number.

It is an amenable number.

45664945 is a deficient number, since it is larger than the sum of its proper divisors (9132995).

45664945 is an equidigital number, since it uses as much as digits as its factorization.

45664945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9132994.

The product of its digits is 518400, while the sum is 43.

The square root of 45664945 is about 6757.5842577063. The cubic root of 45664945 is about 357.4327256983.

The spelling of 45664945 in words is "forty-five million, six hundred sixty-four thousand, nine hundred forty-five".