55384212 has 24 divisors (see below), whose sum is σ = 139170976. Its totient is φ = 17041248.

The previous prime is 55384177. The next prime is 55384213. The reversal of 55384212 is 21248355.

It is a self number, because there is not a number n which added to its sum of digits gives 55384212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55384213) 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 7 ways as a sum of consecutive naturals, for example, 177358 + ... + 177669.

Almost surely, 2^55384212 is an apocalyptic number.

55384212 is a gapful number since it is divisible by the number (52) formed by its first and last digit.

It is an amenable number.

55384212 is an abundant number, since it is smaller than the sum of its proper divisors (83786764).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55384212 is a wasteful number, since it uses less digits than its factorization.

55384212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 355047 (or 355045 counting only the distinct ones).

The product of its digits is 9600, while the sum is 30.

The square root of 55384212 is about 7442.0569737137. The cubic root of 55384212 is about 381.1787313885.

The spelling of 55384212 in words is "fifty-five million, three hundred eighty-four thousand, two hundred twelve".