55516132 has 48 divisors (see below), whose sum is σ = 116903808. Its totient is φ = 22567680.

The previous prime is 55516129. The next prime is 55516141. The reversal of 55516132 is 23161555.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a self number, because there is not a number n which added to its sum of digits gives 55516132.

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, 41823 + ... + 43129.

It is an arithmetic number, because the mean of its divisors is an integer number (2435496).

Almost surely, 2^55516132 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 55516132, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58451904).

55516132 is an abundant number, since it is smaller than the sum of its proper divisors (61387676).

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

55516132 is a wasteful number, since it uses less digits than its factorization.

55516132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1396 (or 1394 counting only the distinct ones).

The product of its digits is 4500, while the sum is 28.

The square root of 55516132 is about 7450.9148431585. The cubic root of 55516132 is about 381.4811354153.

Adding to 55516132 its reverse (23161555), we get a palindrome (78677687).

The spelling of 55516132 in words is "fifty-five million, five hundred sixteen thousand, one hundred thirty-two".