55388171 has 16 divisors (see below), whose sum is σ = 58877280. Its totient is φ = 52039680.

The previous prime is 55388161. The next prime is 55388189. The reversal of 55388171 is 17188355.

It is a cyclic number.

It is not a de Polignac number, because 55388171 - 2⁶ = 55388107 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55388101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 156731 + ... + 157083.

It is an arithmetic number, because the mean of its divisors is an integer number (3679830).

Almost surely, 2^55388171 is an apocalyptic number.

55388171 is a deficient number, since it is larger than the sum of its proper divisors (3489109).

55388171 is a wasteful number, since it uses less digits than its factorization.

55388171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 526.

The product of its digits is 33600, while the sum is 38.

The square root of 55388171 is about 7442.3229572493. The cubic root of 55388171 is about 381.1878137039.

The spelling of 55388171 in words is "fifty-five million, three hundred eighty-eight thousand, one hundred seventy-one".