45538109 has 2 divisors, whose sum is σ = 45538110. Its totient is φ = 45538108.

The previous prime is 45538093. The next prime is 45538151. The reversal of 45538109 is 90183554.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 44222500 + 1315609 = 6650^2 + 1147^2 .

It is a cyclic number.

It is not a de Polignac number, because 45538109 - 2⁴ = 45538093 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 (45538169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22769054 + 22769055.

It is an arithmetic number, because the mean of its divisors is an integer number (22769055).

Almost surely, 2^45538109 is an apocalyptic number.

It is an amenable number.

45538109 is a deficient number, since it is larger than the sum of its proper divisors (1).

45538109 is an equidigital number, since it uses as much as digits as its factorization.

45538109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21600, while the sum is 35.

The square root of 45538109 is about 6748.1930173936. The cubic root of 45538109 is about 357.1014914910.

The spelling of 45538109 in words is "forty-five million, five hundred thirty-eight thousand, one hundred nine".