5500050500561 has 2 divisors, whose sum is σ = 5500050500562. Its totient is φ = 5500050500560.

The previous prime is 5500050500521. The next prime is 5500050500563. The reversal of 5500050500561 is 1650050500055.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5490305059600 + 9745440961 = 2343140^2 + 98719^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5500050500561 is a prime.

It is a super-2 number, since 2×5500050500561² (a number of 26 digits) contains 22 as substring.

Together with 5500050500563, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (5500050500563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2750025250280 + 2750025250281.

It is an arithmetic number, because the mean of its divisors is an integer number (2750025250281).

Almost surely, 2^{5500050500561} is an apocalyptic number.

It is an amenable number.

5500050500561 is a deficient number, since it is larger than the sum of its proper divisors (1).

5500050500561 is an equidigital number, since it uses as much as digits as its factorization.

5500050500561 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18750, while the sum is 32.

The spelling of 5500050500561 in words is "five trillion, five hundred billion, fifty million, five hundred thousand, five hundred sixty-one".