55103132 has 48 divisors (see below), whose sum is σ = 115584000. Its totient is φ = 22486464.

The previous prime is 55103131. The next prime is 55103143. The reversal of 55103132 is 23130155.

55103132 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55103131) by changing a digit.

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, 63719 + ... + 64577.

It is an arithmetic number, because the mean of its divisors is an integer number (2408000).

Almost surely, 2^55103132 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 55103132, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (57792000).

55103132 is an abundant number, since it is smaller than the sum of its proper divisors (60480868).

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

55103132 is a wasteful number, since it uses less digits than its factorization.

55103132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 978 (or 976 counting only the distinct ones).

The product of its (nonzero) digits is 450, while the sum is 20.

The square root of 55103132 is about 7423.1483886556. The cubic root of 55103132 is about 380.5327983203.

Adding to 55103132 its reverse (23130155), we get a palindrome (78233287).

The spelling of 55103132 in words is "fifty-five million, one hundred three thousand, one hundred thirty-two".