55130012 has 24 divisors (see below), whose sum is σ = 111909504. Its totient is φ = 23273712.

The previous prime is 55130003. The next prime is 55130051. The reversal of 55130012 is 21003155.

It is a congruent number.

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, 12818 + ... + 16569.

It is an arithmetic number, because the mean of its divisors is an integer number (4662896).

Almost surely, 2^55130012 is an apocalyptic number.

It is an amenable number.

55130012 is an abundant number, since it is smaller than the sum of its proper divisors (56779492).

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

55130012 is a wasteful number, since it uses less digits than its factorization.

55130012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29465 (or 29463 counting only the distinct ones).

The product of its (nonzero) digits is 150, while the sum is 17.

The square root of 55130012 is about 7424.9587204240. The cubic root of 55130012 is about 380.5946644881.

Adding to 55130012 its reverse (21003155), we get a palindrome (76133167).

The spelling of 55130012 in words is "fifty-five million, one hundred thirty thousand, twelve".