45665009 has 16 divisors (see below), whose sum is σ = 52512768. Its totient is φ = 39336192.

The previous prime is 45665003. The next prime is 45665017. The reversal of 45665009 is 90056654.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 45665009 - 2¹⁶ = 45599473 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 45665009.

It is not an unprimeable number, because it can be changed into a prime (45665003) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27254 + ... + 28880.

It is an arithmetic number, because the mean of its divisors is an integer number (3282048).

Almost surely, 2^45665009 is an apocalyptic number.

It is an amenable number.

45665009 is a deficient number, since it is larger than the sum of its proper divisors (6847759).

45665009 is a wasteful number, since it uses less digits than its factorization.

45665009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1784.

The product of its (nonzero) digits is 32400, while the sum is 35.

The square root of 45665009 is about 6757.5889931247. The cubic root of 45665009 is about 357.4328926804.

The spelling of 45665009 in words is "forty-five million, six hundred sixty-five thousand, nine".