5200660561 has 2 divisors, whose sum is σ = 5200660562. Its totient is φ = 5200660560.

The previous prime is 5200660523. The next prime is 5200660607. The reversal of 5200660561 is 1650660025.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2825560336 + 2375100225 = 53156^2 + 48735^2 .

It is a cyclic number.

It is not a de Polignac number, because 5200660561 - 2¹⁷ = 5200529489 is a prime.

It is not a weakly prime, because it can be changed into another prime (5200660501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2600330280 + 2600330281.

It is an arithmetic number, because the mean of its divisors is an integer number (2600330281).

Almost surely, 2^5200660561 is an apocalyptic number.

It is an amenable number.

5200660561 is a deficient number, since it is larger than the sum of its proper divisors (1).

5200660561 is an equidigital number, since it uses as much as digits as its factorization.

5200660561 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10800, while the sum is 31.

The square root of 5200660561 is about 72115.6055302873. The cubic root of 5200660561 is about 1732.5515670334.

The spelling of 5200660561 in words is "five billion, two hundred million, six hundred sixty thousand, five hundred sixty-one".