55212332 has 12 divisors (see below), whose sum is σ = 110424720. Its totient is φ = 23662416.

The previous prime is 55212331. The next prime is 55212343. The reversal of 55212332 is 23321255.

55212332 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

55212332 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 55212298 and 55212307.

It is not an unprimeable number, because it can be changed into a prime (55212331) 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 3 ways as a sum of consecutive naturals, for example, 985907 + ... + 985962.

It is an arithmetic number, because the mean of its divisors is an integer number (9202060).

Almost surely, 2^55212332 is an apocalyptic number.

It is an amenable number.

55212332 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

55212332 is a wasteful number, since it uses less digits than its factorization.

55212332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1971880 (or 1971878 counting only the distinct ones).

The product of its digits is 1800, while the sum is 23.

The square root of 55212332 is about 7430.5001177579. The cubic root of 55212332 is about 380.7840046214.

Adding to 55212332 its reverse (23321255), we get a palindrome (78533587).

The spelling of 55212332 in words is "fifty-five million, two hundred twelve thousand, three hundred thirty-two".