55388373 has 4 divisors (see below), whose sum is σ = 73851168. Its totient is φ = 36925580.

The previous prime is 55388369. The next prime is 55388381. The reversal of 55388373 is 37388355.

55388373 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 a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 55388373 - 2² = 55388369 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55488373) 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, 9231393 + ... + 9231398.

It is an arithmetic number, because the mean of its divisors is an integer number (18462792).

Almost surely, 2^55388373 is an apocalyptic number.

It is an amenable number.

55388373 is a deficient number, since it is larger than the sum of its proper divisors (18462795).

55388373 is a wasteful number, since it uses less digits than its factorization.

55388373 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18462794.

The product of its digits is 302400, while the sum is 42.

The square root of 55388373 is about 7442.3365282685. The cubic root of 55388373 is about 381.1882770991.

The spelling of 55388373 in words is "fifty-five million, three hundred eighty-eight thousand, three hundred seventy-three".