55550212 has 24 divisors (see below), whose sum is σ = 98671104. Its totient is φ = 27362112.

The previous prime is 55550191. The next prime is 55550213. The reversal of 55550212 is 21205555.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (55550213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 91213 + ... + 91819.

It is an arithmetic number, because the mean of its divisors is an integer number (4111296).

Almost surely, 2^55550212 is an apocalyptic number.

It is an amenable number.

55550212 is a deficient number, since it is larger than the sum of its proper divisors (43120892).

55550212 is a wasteful number, since it uses less digits than its factorization.

55550212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 915 (or 913 counting only the distinct ones).

The product of its (nonzero) digits is 2500, while the sum is 25.

The square root of 55550212 is about 7453.2014597755. The cubic root of 55550212 is about 381.5591801039.

Adding to 55550212 its reverse (21205555), we get a palindrome (76755767).

The spelling of 55550212 in words is "fifty-five million, five hundred fifty thousand, two hundred twelve".