45628321 has 2 divisors, whose sum is σ = 45628322. Its totient is φ = 45628320.

The previous prime is 45628313. The next prime is 45628351. The reversal of 45628321 is 12382654.

45628321 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., 32947600 + 12680721 = 5740^2 + 3561^2 .

It is a cyclic number.

It is not a de Polignac number, because 45628321 - 2³ = 45628313 is a prime.

It is not a weakly prime, because it can be changed into another prime (45628301) 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, 22814160 + 22814161.

It is an arithmetic number, because the mean of its divisors is an integer number (22814161).

Almost surely, 2^45628321 is an apocalyptic number.

It is an amenable number.

45628321 is a deficient number, since it is larger than the sum of its proper divisors (1).

45628321 is an equidigital number, since it uses as much as digits as its factorization.

45628321 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11520, while the sum is 31.

The square root of 45628321 is about 6754.8738700290. The cubic root of 45628321 is about 357.3371445961.

The spelling of 45628321 in words is "forty-five million, six hundred twenty-eight thousand, three hundred twenty-one".