45478609 has 16 divisors (see below), whose sum is σ = 52577280. Its totient is φ = 38903760.

The previous prime is 45478597. The next prime is 45478619. The reversal of 45478609 is 90687454.

It is a cyclic number.

It is not a de Polignac number, because 45478609 - 2⁷ = 45478481 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45478619) 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, 34252 + ... + 35554.

It is an arithmetic number, because the mean of its divisors is an integer number (3286080).

Almost surely, 2^45478609 is an apocalyptic number.

It is an amenable number.

45478609 is a deficient number, since it is larger than the sum of its proper divisors (7098671).

45478609 is a wasteful number, since it uses less digits than its factorization.

45478609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1500.

The product of its (nonzero) digits is 241920, while the sum is 43.

The square root of 45478609 is about 6743.7829887979. The cubic root of 45478609 is about 356.9458943444.

The spelling of 45478609 in words is "forty-five million, four hundred seventy-eight thousand, six hundred nine".