45275809 has 2 divisors, whose sum is σ = 45275810. Its totient is φ = 45275808.

The previous prime is 45275807. The next prime is 45275821. The reversal of 45275809 is 90857254.

45275809 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 30835809 + 14440000 = 5553^2 + 3800^2 .

It is a cyclic number.

It is not a de Polignac number, because 45275809 - 2¹ = 45275807 is a prime.

Together with 45275807, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (45275801) 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 as a sum of consecutive naturals, namely, 22637904 + 22637905.

It is an arithmetic number, because the mean of its divisors is an integer number (22637905).

Almost surely, 2^45275809 is an apocalyptic number.

It is an amenable number.

45275809 is a deficient number, since it is larger than the sum of its proper divisors (1).

45275809 is an equidigital number, since it uses as much as digits as its factorization.

45275809 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 100800, while the sum is 40.

The square root of 45275809 is about 6728.7301179346. The cubic root of 45275809 is about 356.4145346881.

The spelling of 45275809 in words is "forty-five million, two hundred seventy-five thousand, eight hundred nine".