5621563249 has 2 divisors, whose sum is σ = 5621563250. Its totient is φ = 5621563248.

The previous prime is 5621563229. The next prime is 5621563289. The reversal of 5621563249 is 9423651265.

5621563249 is digitally balanced in base 3, 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., 5413280625 + 208282624 = 73575^2 + 14432^2 .

It is a cyclic number.

It is not a de Polignac number, because 5621563249 - 2⁷ = 5621563121 is a prime.

It is not a weakly prime, because it can be changed into another prime (5621563229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2810781624 + 2810781625.

It is an arithmetic number, because the mean of its divisors is an integer number (2810781625).

Almost surely, 2^5621563249 is an apocalyptic number.

It is an amenable number.

5621563249 is a deficient number, since it is larger than the sum of its proper divisors (1).

5621563249 is an equidigital number, since it uses as much as digits as its factorization.

5621563249 is an evil number, because the sum of its binary digits is even.

The product of its digits is 388800, while the sum is 43.

The square root of 5621563249 is about 74977.0848259653. The cubic root of 5621563249 is about 1778.0843812219.

The spelling of 5621563249 in words is "five billion, six hundred twenty-one million, five hundred sixty-three thousand, two hundred forty-nine".