45560821 has 2 divisors, whose sum is σ = 45560822. Its totient is φ = 45560820.

The previous prime is 45560789. The next prime is 45560863. The reversal of 45560821 is 12806554.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 45077796 + 483025 = 6714^2 + 695^2 .

It is a cyclic number.

It is not a de Polignac number, because 45560821 - 2⁵ = 45560789 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45560891) 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, 22780410 + 22780411.

It is an arithmetic number, because the mean of its divisors is an integer number (22780411).

Almost surely, 2^45560821 is an apocalyptic number.

It is an amenable number.

45560821 is a deficient number, since it is larger than the sum of its proper divisors (1).

45560821 is an equidigital number, since it uses as much as digits as its factorization.

45560821 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9600, while the sum is 31.

The square root of 45560821 is about 6749.8756284838. The cubic root of 45560821 is about 357.1608494021.

The spelling of 45560821 in words is "forty-five million, five hundred sixty thousand, eight hundred twenty-one".