55271424 has 112 divisors (see below), whose sum is σ = 159635952. Its totient is φ = 16908288.

The previous prime is 55271423. The next prime is 55271431. The reversal of 55271424 is 42417255.

It is a junction number, because it is equal to n+sod(n) for n = 55271391 and 55271400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55271423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 319402 + ... + 319574.

It is an arithmetic number, because the mean of its divisors is an integer number (1425321).

Almost surely, 2^55271424 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 55271424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79817976).

55271424 is an abundant number, since it is smaller than the sum of its proper divisors (104364528).

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

55271424 is a wasteful number, since it uses less digits than its factorization.

55271424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215 (or 191 counting only the distinct ones).

The product of its digits is 11200, while the sum is 30.

The square root of 55271424 is about 7434.4753681749. The cubic root of 55271424 is about 380.9198031824.

Adding to 55271424 its reverse (42417255), we get a palindrome (97688679).

The spelling of 55271424 in words is "fifty-five million, two hundred seventy-one thousand, four hundred twenty-four".