5548121860 has 12 divisors (see below), whose sum is σ = 11651055948. Its totient is φ = 2219248736.

The previous prime is 5548121849. The next prime is 5548121869. The reversal of 5548121860 is 681218455.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1944280836 + 3603841024 = 44094^2 + 60032^2 .

It is not an unprimeable number, because it can be changed into a prime (5548121869) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 138703027 + ... + 138703066.

It is an arithmetic number, because the mean of its divisors is an integer number (970921329).

Almost surely, 2^5548121860 is an apocalyptic number.

It is an amenable number.

5548121860 is an abundant number, since it is smaller than the sum of its proper divisors (6102934088).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

5548121860 is a wasteful number, since it uses less digits than its factorization.

5548121860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 277406102 (or 277406100 counting only the distinct ones).

The product of its (nonzero) digits is 76800, while the sum is 40.

The square root of 5548121860 is about 74485.7158118253. The cubic root of 5548121860 is about 1770.3073146799.

The spelling of 5548121860 in words is "five billion, five hundred forty-eight million, one hundred twenty-one thousand, eight hundred sixty".