55103032212 has 48 divisors (see below), whose sum is σ = 136153483200. Its totient is φ = 17285120512.

The previous prime is 55103032181. The next prime is 55103032213. The reversal of 55103032212 is 21223030155.

It is a happy number.

It is a super-2 number, since 2×55103032212² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55103032213) 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 15 ways as a sum of consecutive naturals, for example, 3214039 + ... + 3231137.

It is an arithmetic number, because the mean of its divisors is an integer number (2836530900).

Almost surely, 2^55103032212 is an apocalyptic number.

It is an amenable number.

55103032212 is an abundant number, since it is smaller than the sum of its proper divisors (81050450988).

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

55103032212 is a wasteful number, since it uses less digits than its factorization.

55103032212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32920 (or 32918 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 24.

Adding to 55103032212 its reverse (21223030155), we get a palindrome (76326062367).

The spelling of 55103032212 in words is "fifty-five billion, one hundred three million, thirty-two thousand, two hundred twelve".