55571384 has 32 divisors (see below), whose sum is σ = 114791040. Its totient is φ = 25010400.

The previous prime is 55571363. The next prime is 55571387. The reversal of 55571384 is 48317555.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55571387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5999 + ... + 12129.

It is an arithmetic number, because the mean of its divisors is an integer number (3587220).

Almost surely, 2^55571384 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55571384, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (57395520).

55571384 is an abundant number, since it is smaller than the sum of its proper divisors (59219656).

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

55571384 is a wasteful number, since it uses less digits than its factorization.

55571384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6251 (or 6247 counting only the distinct ones).

The product of its digits is 84000, while the sum is 38.

The square root of 55571384 is about 7454.6216537125. The cubic root of 55571384 is about 381.6076488350.

It can be divided in two parts, 55571 and 384, that added together give a palindrome (55955).

The spelling of 55571384 in words is "fifty-five million, five hundred seventy-one thousand, three hundred eighty-four".