45038109 has 4 divisors (see below), whose sum is σ = 60050816. Its totient is φ = 30025404.

The previous prime is 45038099. The next prime is 45038129. The reversal of 45038109 is 90183054.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 45038109 - 2⁴ = 45038093 is a prime.

It is an alternating number because its digits alternate between even and odd.

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 (45038129) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7506349 + ... + 7506354.

It is an arithmetic number, because the mean of its divisors is an integer number (15012704).

Almost surely, 2^45038109 is an apocalyptic number.

It is an amenable number.

45038109 is a deficient number, since it is larger than the sum of its proper divisors (15012707).

45038109 is a wasteful number, since it uses less digits than its factorization.

45038109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15012706.

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 45038109 is about 6711.0438085293. The cubic root of 45038109 is about 355.7897092644.

The spelling of 45038109 in words is "forty-five million, thirty-eight thousand, one hundred nine".