45104509 has 2 divisors, whose sum is σ = 45104510. Its totient is φ = 45104508.

The previous prime is 45104491. The next prime is 45104531. The reversal of 45104509 is 90540154.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 33524100 + 11580409 = 5790^2 + 3403^2 .

It is a cyclic number.

It is not a de Polignac number, because 45104509 - 2¹¹ = 45102461 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45104539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22552254 + 22552255.

It is an arithmetic number, because the mean of its divisors is an integer number (22552255).

Almost surely, 2^45104509 is an apocalyptic number.

It is an amenable number.

45104509 is a deficient number, since it is larger than the sum of its proper divisors (1).

45104509 is an equidigital number, since it uses as much as digits as its factorization.

45104509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3600, while the sum is 28.

The square root of 45104509 is about 6715.9890559768. The cubic root of 45104509 is about 355.9644711629.

The spelling of 45104509 in words is "forty-five million, one hundred four thousand, five hundred nine".