45195309 has 6 divisors (see below), whose sum is σ = 65282126. Its totient is φ = 30130200.

The previous prime is 45195301. The next prime is 45195313. The reversal of 45195309 is 90359154.

It can be written as a sum of positive squares in only one way, i.e., 23011209 + 22184100 = 4797^2 + 4710^2 .

It is not a de Polignac number, because 45195309 - 2³ = 45195301 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 (45195301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2510842 + ... + 2510859.

Almost surely, 2^45195309 is an apocalyptic number.

It is an amenable number.

45195309 is a deficient number, since it is larger than the sum of its proper divisors (20086817).

45195309 is a wasteful number, since it uses less digits than its factorization.

45195309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5021707 (or 5021704 counting only the distinct ones).

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

The square root of 45195309 is about 6722.7456444521. The cubic root of 45195309 is about 356.2031753785.

The spelling of 45195309 in words is "forty-five million, one hundred ninety-five thousand, three hundred nine".