55144032 has 48 divisors (see below), whose sum is σ = 145297152. Its totient is φ = 18312320.

The previous prime is 55144031. The next prime is 55144049. The reversal of 55144032 is 23044155.

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

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a junction number, because it is equal to n+sod(n) for n = 55143993 and 55144011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55144031) 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, 28933 + ... + 30779.

It is an arithmetic number, because the mean of its divisors is an integer number (3027024).

Almost surely, 2^55144032 is an apocalyptic number.

It is an amenable number.

55144032 is an abundant number, since it is smaller than the sum of its proper divisors (90153120).

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

55144032 is a wasteful number, since it uses less digits than its factorization.

55144032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2171 (or 2163 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 55144032 is about 7425.9027734007. The cubic root of 55144032 is about 380.6269245024.

Adding to 55144032 its reverse (23044155), we get a palindrome (78188187).

The spelling of 55144032 in words is "fifty-five million, one hundred forty-four thousand, thirty-two".