55212244 has 12 divisors (see below), whose sum is σ = 97262368. Its totient is φ = 27423000.

The previous prime is 55212239. The next prime is 55212253. The reversal of 55212244 is 44221255.

55212244 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (25) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

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, 45102 + ... + 46309.

Almost surely, 2^55212244 is an apocalyptic number.

It is an amenable number.

55212244 is a deficient number, since it is larger than the sum of its proper divisors (42050124).

55212244 is a wasteful number, since it uses less digits than its factorization.

55212244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91566 (or 91564 counting only the distinct ones).

The product of its digits is 3200, while the sum is 25.

The square root of 55212244 is about 7430.4941962160. The cubic root of 55212244 is about 380.7838023175.

Adding to 55212244 its reverse (44221255), we get a palindrome (99433499).

The spelling of 55212244 in words is "fifty-five million, two hundred twelve thousand, two hundred forty-four".