55388469 has 8 divisors (see below), whose sum is σ = 73903680. Its totient is φ = 36899456.

The previous prime is 55388453. The next prime is 55388471. The reversal of 55388469 is 96488355.

It is a happy number.

55388469 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 55388469 - 2⁴ = 55388453 is a prime.

It is a super-2 number, since 2×55388469² = 6135764996327922, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55388479) 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, 924 + ... + 10565.

It is an arithmetic number, because the mean of its divisors is an integer number (9237960).

Almost surely, 2^55388469 is an apocalyptic number.

It is an amenable number.

55388469 is a deficient number, since it is larger than the sum of its proper divisors (18515211).

55388469 is a wasteful number, since it uses less digits than its factorization.

55388469 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13099.

The product of its digits is 1036800, while the sum is 48.

The square root of 55388469 is about 7442.3429778531. The cubic root of 55388469 is about 381.1884973262.

The spelling of 55388469 in words is "fifty-five million, three hundred eighty-eight thousand, four hundred sixty-nine".