55511424 has 48 divisors (see below), whose sum is σ = 159743220. Its totient is φ = 18503424.

The previous prime is 55511413. The next prime is 55511429. The reversal of 55511424 is 42411555.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55511429) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 22942 + ... + 25245.

Almost surely, 2^55511424 is an apocalyptic number.

It is an amenable number.

55511424 is an abundant number, since it is smaller than the sum of its proper divisors (104231796).

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

55511424 is a wasteful number, since it uses less digits than its factorization.

55511424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48207 (or 48192 counting only the distinct ones).

The product of its digits is 4000, while the sum is 27.

The square root of 55511424 is about 7450.5989021018. The cubic root of 55511424 is about 381.4703513790.

Adding to 55511424 its reverse (42411555), we get a palindrome (97922979).

The spelling of 55511424 in words is "fifty-five million, five hundred eleven thousand, four hundred twenty-four".