5548555081 has 4 divisors (see below), whose sum is σ = 5874940692. Its totient is φ = 5222169472.

The previous prime is 5548555079. The next prime is 5548555093. The reversal of 5548555081 is 1805558455.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1805558455 = 5 ⋅361111691.

It can be written as a sum of positive squares in 2 ways, for example, as 4149421056 + 1399134025 = 64416^2 + 37405^2 .

It is a cyclic number.

It is not a de Polignac number, because 5548555081 - 2¹ = 5548555079 is a prime.

It is a super-2 number, since 2×5548555081² = 61572926973781833122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5548555031) 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, 163192780 + ... + 163192813.

It is an arithmetic number, because the mean of its divisors is an integer number (1468735173).

Almost surely, 2^5548555081 is an apocalyptic number.

It is an amenable number.

5548555081 is a deficient number, since it is larger than the sum of its proper divisors (326385611).

5548555081 is a wasteful number, since it uses less digits than its factorization.

5548555081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 326385610.

The product of its (nonzero) digits is 800000, while the sum is 46.

The square root of 5548555081 is about 74488.6238361268. The cubic root of 5548555081 is about 1770.3533911940.

The spelling of 5548555081 in words is "five billion, five hundred forty-eight million, five hundred fifty-five thousand, eighty-one".