5548861121 has 2 divisors, whose sum is σ = 5548861122. Its totient is φ = 5548861120.

The previous prime is 5548861117. The next prime is 5548861127. The reversal of 5548861121 is 1211688455.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5548611121 + 250000 = 74489^2 + 500^2 .

It is a cyclic number.

It is not a de Polignac number, because 5548861121 - 2² = 5548861117 is a prime.

It is not a weakly prime, because it can be changed into another prime (5548861127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2774430560 + 2774430561.

It is an arithmetic number, because the mean of its divisors is an integer number (2774430561).

Almost surely, 2^5548861121 is an apocalyptic number.

It is an amenable number.

5548861121 is a deficient number, since it is larger than the sum of its proper divisors (1).

5548861121 is an equidigital number, since it uses as much as digits as its factorization.

5548861121 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 76800, while the sum is 41.

The square root of 5548861121 is about 74490.6780812203. The cubic root of 5548861121 is about 1770.3859395471.

The spelling of 5548861121 in words is "five billion, five hundred forty-eight million, eight hundred sixty-one thousand, one hundred twenty-one".