5005640561 has 2 divisors, whose sum is σ = 5005640562. Its totient is φ = 5005640560.

The previous prime is 5005640557. The next prime is 5005640569. The reversal of 5005640561 is 1650465005.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2619904225 + 2385736336 = 51185^2 + 48844^2 .

It is a cyclic number.

It is not a de Polignac number, because 5005640561 - 2² = 5005640557 is a prime.

It is not a weakly prime, because it can be changed into another prime (5005640569) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2502820280 + 2502820281.

It is an arithmetic number, because the mean of its divisors is an integer number (2502820281).

Almost surely, 2^5005640561 is an apocalyptic number.

It is an amenable number.

5005640561 is a deficient number, since it is larger than the sum of its proper divisors (1).

5005640561 is an equidigital number, since it uses as much as digits as its factorization.

5005640561 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18000, while the sum is 32.

The square root of 5005640561 is about 70750.5516656937. The cubic root of 5005640561 is about 1710.6187199395.

The spelling of 5005640561 in words is "five billion, five million, six hundred forty thousand, five hundred sixty-one".