55242432 has 112 divisors (see below), whose sum is σ = 185643520. Its totient is φ = 15780096.

The previous prime is 55242391. The next prime is 55242479. The reversal of 55242432 is 23424255.

It is a happy number.

55242432 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (112).

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 = 55242396 and 55242405.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9813 + ... + 14379.

Almost surely, 2^55242432 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 55242432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (92821760).

55242432 is an abundant number, since it is smaller than the sum of its proper divisors (130401088).

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

55242432 is a wasteful number, since it uses less digits than its factorization.

55242432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4595 (or 4579 counting only the distinct ones).

The product of its digits is 9600, while the sum is 27.

The square root of 55242432 is about 7432.5252774545. The cubic root of 55242432 is about 380.8531891431.

Adding to 55242432 its reverse (23424255), we get a palindrome (78666687).

The spelling of 55242432 in words is "fifty-five million, two hundred forty-two thousand, four hundred thirty-two".