45007309 has 2 divisors, whose sum is σ = 45007310. Its totient is φ = 45007308.

The previous prime is 45007289. The next prime is 45007349. The reversal of 45007309 is 90370054.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23011209 + 21996100 = 4797^2 + 4690^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-45007309 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45007349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22503654 + 22503655.

It is an arithmetic number, because the mean of its divisors is an integer number (22503655).

Almost surely, 2^45007309 is an apocalyptic number.

It is an amenable number.

45007309 is a deficient number, since it is larger than the sum of its proper divisors (1).

45007309 is an equidigital number, since it uses as much as digits as its factorization.

45007309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3780, while the sum is 28.

The square root of 45007309 is about 6708.7486910750. The cubic root of 45007309 is about 355.7085866903.

The spelling of 45007309 in words is "forty-five million, seven thousand, three hundred nine".