5200563661 has 2 divisors, whose sum is σ = 5200563662. Its totient is φ = 5200563660.

The previous prime is 5200563659. The next prime is 5200563671. The reversal of 5200563661 is 1663650025.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4355208036 + 845355625 = 65994^2 + 29075^2 .

It is a cyclic number.

It is not a de Polignac number, because 5200563661 - 2¹ = 5200563659 is a prime.

It is a super-2 number, since 2×5200563661² = 54091724784227445842, which contains 22 as substring.

Together with 5200563659, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5200563671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2600281830 + 2600281831.

It is an arithmetic number, because the mean of its divisors is an integer number (2600281831).

Almost surely, 2^5200563661 is an apocalyptic number.

It is an amenable number.

5200563661 is a deficient number, since it is larger than the sum of its proper divisors (1).

5200563661 is an equidigital number, since it uses as much as digits as its factorization.

5200563661 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32400, while the sum is 34.

The square root of 5200563661 is about 72114.9336892159. The cubic root of 5200563661 is about 1732.5408065227.

The spelling of 5200563661 in words is "five billion, two hundred million, five hundred sixty-three thousand, six hundred sixty-one".