45345909 has 8 divisors (see below), whose sum is σ = 69098560. Its totient is φ = 25911936.

The previous prime is 45345889. The next prime is 45345943. The reversal of 45345909 is 90954354.

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

It is not a de Polignac number, because 45345909 - 2²⁴ = 28568693 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45345109) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1079644 + ... + 1079685.

It is an arithmetic number, because the mean of its divisors is an integer number (8637320).

Almost surely, 2^45345909 is an apocalyptic number.

It is an amenable number.

45345909 is a deficient number, since it is larger than the sum of its proper divisors (23752651).

45345909 is a wasteful number, since it uses less digits than its factorization.

45345909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2159339.

The product of its (nonzero) digits is 97200, while the sum is 39.

The square root of 45345909 is about 6733.9371098934. The cubic root of 45345909 is about 356.5983839742.

The spelling of 45345909 in words is "forty-five million, three hundred forty-five thousand, nine hundred nine".