55581171 has 16 divisors (see below), whose sum is σ = 77214720. Its totient is φ = 35523360.

The previous prime is 55581167. The next prime is 55581173. The reversal of 55581171 is 17118555.

55581171 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 55581171 - 2² = 55581167 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55581173) 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 15 ways as a sum of consecutive naturals, for example, 7396 + ... + 12878.

It is an arithmetic number, because the mean of its divisors is an integer number (4825920).

Almost surely, 2^55581171 is an apocalyptic number.

55581171 is a deficient number, since it is larger than the sum of its proper divisors (21633549).

55581171 is a wasteful number, since it uses less digits than its factorization.

55581171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5626.

The product of its digits is 7000, while the sum is 33.

The square root of 55581171 is about 7455.2780632247. The cubic root of 55581171 is about 381.6300499017.

The spelling of 55581171 in words is "fifty-five million, five hundred eighty-one thousand, one hundred seventy-one".