45319509 has 12 divisors (see below), whose sum is σ = 65520000. Its totient is φ = 30186024.

The previous prime is 45319481. The next prime is 45319543. The reversal of 45319509 is 90591354.

45319509 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 45319509 - 2⁷ = 45319381 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45319559) 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 11 ways as a sum of consecutive naturals, for example, 17692 + ... + 20090.

It is an arithmetic number, because the mean of its divisors is an integer number (5460000).

Almost surely, 2^45319509 is an apocalyptic number.

It is an amenable number.

45319509 is a deficient number, since it is larger than the sum of its proper divisors (20200491).

45319509 is a wasteful number, since it uses less digits than its factorization.

45319509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4504 (or 4501 counting only the distinct ones).

The product of its (nonzero) digits is 24300, while the sum is 36.

The square root of 45319509 is about 6731.9766042374. The cubic root of 45319509 is about 356.5291676980.

The spelling of 45319509 in words is "forty-five million, three hundred nineteen thousand, five hundred nine".