55180012 has 12 divisors (see below), whose sum is σ = 96999616. Its totient is φ = 27465840.

The previous prime is 55179989. The next prime is 55180019. The reversal of 55180012 is 21008155.

It is not an unprimeable number, because it can be changed into a prime (55180019) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30039 + ... + 31822.

Almost surely, 2^55180012 is an apocalyptic number.

It is an amenable number.

55180012 is a deficient number, since it is larger than the sum of its proper divisors (41819604).

55180012 is a wasteful number, since it uses less digits than its factorization.

55180012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62088 (or 62086 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 22.

The square root of 55180012 is about 7428.3249794284. The cubic root of 55180012 is about 380.7096894533.

Adding to 55180012 its reverse (21008155), we get a palindrome (76188167).

The spelling of 55180012 in words is "fifty-five million, one hundred eighty thousand, twelve".