5585447921 has 2 divisors, whose sum is σ = 5585447922. Its totient is φ = 5585447920.

The previous prime is 5585447911. The next prime is 5585447927. The reversal of 5585447921 is 1297445855.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4558950400 + 1026497521 = 67520^2 + 32039^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5585447921 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 5585447921.

It is not a weakly prime, because it can be changed into another prime (5585447927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2792723960 + 2792723961.

It is an arithmetic number, because the mean of its divisors is an integer number (2792723961).

Almost surely, 2^5585447921 is an apocalyptic number.

It is an amenable number.

5585447921 is a deficient number, since it is larger than the sum of its proper divisors (1).

5585447921 is an equidigital number, since it uses as much as digits as its factorization.

5585447921 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2016000, while the sum is 50.

The square root of 5585447921 is about 74735.8543203997. The cubic root of 5585447921 is about 1774.2684728494.

The spelling of 5585447921 in words is "five billion, five hundred eighty-five million, four hundred forty-seven thousand, nine hundred twenty-one".