548991132 has 48 divisors (see below), whose sum is σ = 1366751232. Its totient is φ = 170909440.

The previous prime is 548991127. The next prime is 548991137. The reversal of 548991132 is 231199845.

It is an interprime number because it is at equal distance from previous prime (548991127) and next prime (548991137).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (548991137) 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, 16453 + ... + 36995.

It is an arithmetic number, because the mean of its divisors is an integer number (28473984).

Almost surely, 2^548991132 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 548991132, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (683375616).

548991132 is an abundant number, since it is smaller than the sum of its proper divisors (817760100).

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

548991132 is a wasteful number, since it uses less digits than its factorization.

548991132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20698 (or 20696 counting only the distinct ones).

The product of its digits is 77760, while the sum is 42.

The square root of 548991132 is about 23430.5597884472. The cubic root of 548991132 is about 818.8200021572.

The spelling of 548991132 in words is "five hundred forty-eight million, nine hundred ninety-one thousand, one hundred thirty-two".