45591809 has 8 divisors (see below), whose sum is σ = 45995040. Its totient is φ = 45190816.

The previous prime is 45591803. The next prime is 45591823. The reversal of 45591809 is 90819554.

It is a happy number.

45591809 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 45591809 - 2¹² = 45587713 is a prime.

It is a super-2 number, since 2×45591809² = 4157226095784962, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45591803) by changing a digit.

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, 97394 + ... + 97860.

It is an arithmetic number, because the mean of its divisors is an integer number (5749380).

Almost surely, 2^45591809 is an apocalyptic number.

It is an amenable number.

45591809 is a deficient number, since it is larger than the sum of its proper divisors (403231).

45591809 is a wasteful number, since it uses less digits than its factorization.

45591809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1119.

The product of its (nonzero) digits is 64800, while the sum is 41.

The square root of 45591809 is about 6752.1706880084. The cubic root of 45591809 is about 357.2418048655.

The spelling of 45591809 in words is "forty-five million, five hundred ninety-one thousand, eight hundred nine".