55388998 has 16 divisors (see below), whose sum is σ = 95639040. Its totient is φ = 23566536.

The previous prime is 55388989. The next prime is 55388999. The reversal of 55388998 is 89988355.

55388998 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55388999) 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 7 ways as a sum of consecutive naturals, for example, 12286 + ... + 16177.

It is an arithmetic number, because the mean of its divisors is an integer number (5977440).

Almost surely, 2^55388998 is an apocalyptic number.

55388998 is a deficient number, since it is larger than the sum of its proper divisors (40250042).

55388998 is a wasteful number, since it uses less digits than its factorization.

55388998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28611.

The product of its digits is 3110400, while the sum is 55.

The square root of 55388998 is about 7442.3785176515. The cubic root of 55388998 is about 381.1897108644.

The spelling of 55388998 in words is "fifty-five million, three hundred eighty-eight thousand, nine hundred ninety-eight".