45099509 has 24 divisors (see below), whose sum is σ = 56744640. Its totient is φ = 35088768.

The previous prime is 45099499. The next prime is 45099511. The reversal of 45099509 is 90599054.

45099509 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 45099509 - 2⁸ = 45099253 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 (45099209) 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 23 ways as a sum of consecutive naturals, for example, 78977 + ... + 79545.

It is an arithmetic number, because the mean of its divisors is an integer number (2364360).

Almost surely, 2^45099509 is an apocalyptic number.

It is an amenable number.

45099509 is a deficient number, since it is larger than the sum of its proper divisors (11645131).

45099509 is a wasteful number, since it uses less digits than its factorization.

45099509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 669 (or 656 counting only the distinct ones).

The product of its (nonzero) digits is 72900, while the sum is 41.

The square root of 45099509 is about 6715.6167996693. The cubic root of 45099509 is about 355.9513173551.

The spelling of 45099509 in words is "forty-five million, ninety-nine thousand, five hundred nine".