45011321 has 2 divisors, whose sum is σ = 45011322. Its totient is φ = 45011320.

The previous prime is 45011303. The next prime is 45011327. The reversal of 45011321 is 12311054.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 41731600 + 3279721 = 6460^2 + 1811^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-45011321 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 45011321.

It is not a weakly prime, because it can be changed into another prime (45011327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22505660 + 22505661.

It is an arithmetic number, because the mean of its divisors is an integer number (22505661).

Almost surely, 2^45011321 is an apocalyptic number.

It is an amenable number.

45011321 is a deficient number, since it is larger than the sum of its proper divisors (1).

45011321 is an equidigital number, since it uses as much as digits as its factorization.

45011321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 45011321 is about 6709.0476969537. The cubic root of 45011321 is about 355.7191557918.

Adding to 45011321 its reverse (12311054), we get a palindrome (57322375).

The spelling of 45011321 in words is "forty-five million, eleven thousand, three hundred twenty-one".