5644531447 has 2 divisors, whose sum is σ = 5644531448. Its totient is φ = 5644531446.

The previous prime is 5644531433. The next prime is 5644531463. The reversal of 5644531447 is 7441354465.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 5644531447 - 2¹¹ = 5644529399 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5644531427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2822265723 + 2822265724.

It is an arithmetic number, because the mean of its divisors is an integer number (2822265724).

Almost surely, 2^5644531447 is an apocalyptic number.

5644531447 is a deficient number, since it is larger than the sum of its proper divisors (1).

5644531447 is an equidigital number, since it uses as much as digits as its factorization.

5644531447 is an evil number, because the sum of its binary digits is even.

The product of its digits is 806400, while the sum is 43.

The square root of 5644531447 is about 75130.0968121298. The cubic root of 5644531447 is about 1780.5026824801.

The spelling of 5644531447 in words is "five billion, six hundred forty-four million, five hundred thirty-one thousand, four hundred forty-seven".