45134509 has 4 divisors (see below), whose sum is σ = 51582304. Its totient is φ = 38686716.

The previous prime is 45134471. The next prime is 45134521. The reversal of 45134509 is 90543154.

45134509 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 a cyclic number.

It is not a de Polignac number, because 45134509 - 2⁷ = 45134381 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45134549) 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 3 ways as a sum of consecutive naturals, for example, 3223887 + ... + 3223900.

It is an arithmetic number, because the mean of its divisors is an integer number (12895576).

Almost surely, 2^45134509 is an apocalyptic number.

It is an amenable number.

45134509 is a deficient number, since it is larger than the sum of its proper divisors (6447795).

45134509 is an equidigital number, since it uses as much as digits as its factorization.

45134509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6447794.

The product of its (nonzero) digits is 10800, while the sum is 31.

The square root of 45134509 is about 6718.2221606613. Note that the first 3 decimals coincide. The cubic root of 45134509 is about 356.0433736027.

The spelling of 45134509 in words is "forty-five million, one hundred thirty-four thousand, five hundred nine".