5561622289 has 2 divisors, whose sum is σ = 5561622290. Its totient is φ = 5561622288.

The previous prime is 5561622247. The next prime is 5561622317. The reversal of 5561622289 is 9822261655.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5458254400 + 103367889 = 73880^2 + 10167^2 .

It is a cyclic number.

It is not a de Polignac number, because 5561622289 - 2²¹ = 5559525137 is a prime.

It is not a weakly prime, because it can be changed into another prime (5561622089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2780811144 + 2780811145.

It is an arithmetic number, because the mean of its divisors is an integer number (2780811145).

Almost surely, 2^5561622289 is an apocalyptic number.

It is an amenable number.

5561622289 is a deficient number, since it is larger than the sum of its proper divisors (1).

5561622289 is an equidigital number, since it uses as much as digits as its factorization.

5561622289 is an evil number, because the sum of its binary digits is even.

The product of its digits is 518400, while the sum is 46.

The square root of 5561622289 is about 74576.2850308327. The cubic root of 5561622289 is about 1771.7420674063.

The spelling of 5561622289 in words is "five billion, five hundred sixty-one million, six hundred twenty-two thousand, two hundred eighty-nine".