55804032 has 128 divisors (see below), whose sum is σ = 167851200. Its totient is φ = 18247680.

The previous prime is 55803991. The next prime is 55804039. The reversal of 55804032 is 23040855.

It is a tau number, because it is divible by the number of its divisors (128).

It is a super-2 number, since 2×55804032² = 6228179974914048, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 55803987 and 55804005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55804039) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 231432 + ... + 231672.

Almost surely, 2^55804032 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 55804032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (83925600).

55804032 is an abundant number, since it is smaller than the sum of its proper divisors (112047168).

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

55804032 is a wasteful number, since it uses less digits than its factorization.

55804032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 331 (or 313 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The square root of 55804032 is about 7470.2096356126. The cubic root of 55804032 is about 382.1394372320.

Adding to 55804032 its reverse (23040855), we get a palindrome (78844887).

The spelling of 55804032 in words is "fifty-five million, eight hundred four thousand, thirty-two".