45508109 has 2 divisors, whose sum is σ = 45508110. Its totient is φ = 45508108.

The previous prime is 45508091. The next prime is 45508123. The reversal of 45508109 is 90180554.

45508109 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

Together with previous prime (45508091) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30492484 + 15015625 = 5522^2 + 3875^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-45508109 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45508139) 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, 22754054 + 22754055.

It is an arithmetic number, because the mean of its divisors is an integer number (22754055).

Almost surely, 2^45508109 is an apocalyptic number.

It is an amenable number.

45508109 is a deficient number, since it is larger than the sum of its proper divisors (1).

45508109 is an equidigital number, since it uses as much as digits as its factorization.

45508109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7200, while the sum is 32.

The square root of 45508109 is about 6745.9698339082. The cubic root of 45508109 is about 357.0230561000.

The spelling of 45508109 in words is "forty-five million, five hundred eight thousand, one hundred nine".