55081171 has 4 divisors (see below), whose sum is σ = 57980200. Its totient is φ = 52182144.

The previous prime is 55081157. The next prime is 55081181. The reversal of 55081171 is 17118055.

55081171 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17118055 = 5 ⋅3423611.

It is a cyclic number.

It is not a de Polignac number, because 55081171 - 2¹⁹ = 54556883 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55081181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1449486 + ... + 1449523.

It is an arithmetic number, because the mean of its divisors is an integer number (14495050).

Almost surely, 2^55081171 is an apocalyptic number.

55081171 is a deficient number, since it is larger than the sum of its proper divisors (2899029).

55081171 is a wasteful number, since it uses less digits than its factorization.

55081171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2899028.

The product of its (nonzero) digits is 1400, while the sum is 28.

The square root of 55081171 is about 7421.6690171416. The cubic root of 55081171 is about 380.4822386338.

The spelling of 55081171 in words is "fifty-five million, eighty-one thousand, one hundred seventy-one".