45004509 has 24 divisors (see below), whose sum is σ = 71783712. Its totient is φ = 26941920.

The previous prime is 45004481. The next prime is 45004517. The reversal of 45004509 is 90540054.

It is not a de Polignac number, because 45004509 - 2⁷ = 45004381 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45004909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5479 + ... + 10955.

It is an arithmetic number, because the mean of its divisors is an integer number (2990988).

Almost surely, 2^45004509 is an apocalyptic number.

It is an amenable number.

45004509 is a deficient number, since it is larger than the sum of its proper divisors (26779203).

45004509 is a wasteful number, since it uses less digits than its factorization.

45004509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5577 (or 5574 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 45004509 is about 6708.5400050980. The cubic root of 45004509 is about 355.7012100759.

It can be divided in two parts, 4500 and 4509, that added together give a palindrome (9009).

The spelling of 45004509 in words is "forty-five million, four thousand, five hundred nine".