55318329 has 32 divisors (see below), whose sum is σ = 94118400. Its totient is φ = 31758480.

The previous prime is 55318321. The next prime is 55318331. The reversal of 55318329 is 92381355.

55318329 is a `hidden beast` number, since 553 + 1 + 83 + 29 = 666.

55318329 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 55318329 - 2³ = 55318321 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 55318293 and 55318302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55318321) 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 31 ways as a sum of consecutive naturals, for example, 742 + ... + 10544.

It is an arithmetic number, because the mean of its divisors is an integer number (2941200).

Almost surely, 2^55318329 is an apocalyptic number.

It is an amenable number.

55318329 is a deficient number, since it is larger than the sum of its proper divisors (38800071).

55318329 is a wasteful number, since it uses less digits than its factorization.

55318329 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9842 (or 9836 counting only the distinct ones).

The product of its digits is 32400, while the sum is 36.

The square root of 55318329 is about 7437.6292593810. The cubic root of 55318329 is about 381.0275260663.

The spelling of 55318329 in words is "fifty-five million, three hundred eighteen thousand, three hundred twenty-nine".