45518939 has 2 divisors, whose sum is σ = 45518940. Its totient is φ = 45518938.

The previous prime is 45518933. The next prime is 45518947. The reversal of 45518939 is 93981554.

It is a happy number.

45518939 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 is a cyclic number.

It is not a de Polignac number, because 45518939 - 2⁴ = 45518923 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 45518939.

It is not a weakly prime, because it can be changed into another prime (45518933) 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, 22759469 + 22759470.

It is an arithmetic number, because the mean of its divisors is an integer number (22759470).

Almost surely, 2^45518939 is an apocalyptic number.

45518939 is a deficient number, since it is larger than the sum of its proper divisors (1).

45518939 is an equidigital number, since it uses as much as digits as its factorization.

45518939 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 194400, while the sum is 44.

The square root of 45518939 is about 6746.7724876418. The cubic root of 45518939 is about 357.0513752509.

The spelling of 45518939 in words is "forty-five million, five hundred eighteen thousand, nine hundred thirty-nine".