45640345 has 8 divisors (see below), whose sum is σ = 56657160. Its totient is φ = 35253120.

The previous prime is 45640321. The next prime is 45640379. The reversal of 45640345 is 54304654.

45640345 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 14235529 + 31404816 = 3773^2 + 5604^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 45640345 - 2⁵ = 45640313 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 7 ways as a sum of consecutive naturals, for example, 157236 + ... + 157525.

It is an arithmetic number, because the mean of its divisors is an integer number (7082145).

Almost surely, 2^45640345 is an apocalyptic number.

It is an amenable number.

45640345 is a deficient number, since it is larger than the sum of its proper divisors (11016815).

45640345 is a wasteful number, since it uses less digits than its factorization.

45640345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 314795.

The product of its (nonzero) digits is 28800, while the sum is 31.

The square root of 45640345 is about 6755.7638354223. The cubic root of 45640345 is about 357.3685303990.

Adding to 45640345 its reverse (54304654), we get a palindrome (99944999).

The spelling of 45640345 in words is "forty-five million, six hundred forty thousand, three hundred forty-five".