45118321 has 2 divisors, whose sum is σ = 45118322. Its totient is φ = 45118320.

The previous prime is 45118313. The next prime is 45118343. The reversal of 45118321 is 12381154.

45118321 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., 39237696 + 5880625 = 6264^2 + 2425^2 .

It is a cyclic number.

It is not a de Polignac number, because 45118321 - 2³ = 45118313 is a prime.

It is not a weakly prime, because it can be changed into another prime (45118351) 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, 22559160 + 22559161.

It is an arithmetic number, because the mean of its divisors is an integer number (22559161).

Almost surely, 2^45118321 is an apocalyptic number.

It is an amenable number.

45118321 is a deficient number, since it is larger than the sum of its proper divisors (1).

45118321 is an equidigital number, since it uses as much as digits as its factorization.

45118321 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 960, while the sum is 25.

The square root of 45118321 is about 6717.0172695922. The cubic root of 45118321 is about 356.0008021907. Note that the first 3 decimals are identical.

Adding to 45118321 its reverse (12381154), we get a palindrome (57499475).

The spelling of 45118321 in words is "forty-five million, one hundred eighteen thousand, three hundred twenty-one".