5845920721 has 2 divisors, whose sum is σ = 5845920722. Its totient is φ = 5845920720.

The previous prime is 5845920653. The next prime is 5845920727. The reversal of 5845920721 is 1270295485.

5845920721 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5146053696 + 699867025 = 71736^2 + 26455^2 .

It is a cyclic number.

It is not a de Polignac number, because 5845920721 - 2⁷ = 5845920593 is a prime.

It is not a weakly prime, because it can be changed into another prime (5845920727) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2922960360 + 2922960361.

It is an arithmetic number, because the mean of its divisors is an integer number (2922960361).

Almost surely, 2^5845920721 is an apocalyptic number.

It is an amenable number.

5845920721 is a deficient number, since it is larger than the sum of its proper divisors (1).

5845920721 is an equidigital number, since it uses as much as digits as its factorization.

5845920721 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 201600, while the sum is 43.

The square root of 5845920721 is about 76458.6209723926. The cubic root of 5845920721 is about 1801.4310349403.

The spelling of 5845920721 in words is "five billion, eight hundred forty-five million, nine hundred twenty thousand, seven hundred twenty-one".