55545132 has 48 divisors (see below), whose sum is σ = 137289600. Its totient is φ = 17429760.

The previous prime is 55545109. The next prime is 55545157. The reversal of 55545132 is 23154555.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 55545132.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40132 + ... + 41492.

It is an arithmetic number, because the mean of its divisors is an integer number (2860200).

Almost surely, 2^55545132 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 55545132, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (68644800).

55545132 is an abundant number, since it is smaller than the sum of its proper divisors (81744468).

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

55545132 is a wasteful number, since it uses less digits than its factorization.

55545132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1566 (or 1564 counting only the distinct ones).

The product of its digits is 15000, while the sum is 30.

The square root of 55545132 is about 7452.8606588343. The cubic root of 55545132 is about 381.5475487068.

Adding to 55545132 its reverse (23154555), we get a palindrome (78699687).

The spelling of 55545132 in words is "fifty-five million, five hundred forty-five thousand, one hundred thirty-two".