55512171112 has 32 divisors (see below), whose sum is σ = 105824108520. Its totient is φ = 27292688640.

The previous prime is 55512171109. The next prime is 55512171133. The reversal of 55512171112 is 21117121555.

It can be written as a sum of positive squares in 4 ways, for example, as 18013397796 + 37498773316 = 134214^2 + 193646^2 .

It is a super-2 number, since 2×55512171112² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1759218 + ... + 1790494.

Almost surely, 2^55512171112 is an apocalyptic number.

It is an amenable number.

55512171112 is a deficient number, since it is larger than the sum of its proper divisors (50311937408).

55512171112 is a wasteful number, since it uses less digits than its factorization.

55512171112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34981 (or 34977 counting only the distinct ones).

The product of its digits is 3500, while the sum is 31.

Adding to 55512171112 its reverse (21117121555), we get a palindrome (76629292667).

The spelling of 55512171112 in words is "fifty-five billion, five hundred twelve million, one hundred seventy-one thousand, one hundred twelve".