55441212 has 12 divisors (see below), whose sum is σ = 129362856.
Its totient is φ = 18480400.
The previous prime is 55441181. The next prime is 55441213. The reversal of 55441212 is 21214455.
It is a tau number, because it is divible by the number of its divisors (12).
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (55441213) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (17) of ones.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2310039 + ... + 2310062.
It is an arithmetic number, because the mean of its divisors is an integer number (10780238).
Almost surely, 255441212 is an apocalyptic number.
It is an amenable number.
55441212 is an abundant number, since it is smaller than the sum of its proper divisors (73921644).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
55441212 is a wasteful number, since it uses less digits than its factorization.
55441212 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 4620108 (or 4620106 counting only the distinct ones).
The product of its digits is 1600, while the sum is 24.
The square root of 55441212 is about 7445.8855752691.
The cubic root of 55441212 is about 381.3094529875.
Adding to 55441212 its reverse (21214455), we get a palindrome (76655667).
The spelling of 55441212 in words is "fifty-five million, four hundred forty-one thousand, two hundred twelve".