55308012 has 48 divisors (see below), whose sum is σ = 137746560. Its totient is φ = 17221248.

The previous prime is 55307981. The next prime is 55308023. The reversal of 55308012 is 21080355.

It is an unprimeable number.

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, 14983 + ... + 18305.

It is an arithmetic number, because the mean of its divisors is an integer number (2869720).

Almost surely, 2^55308012 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55308012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (68873280).

55308012 is an abundant number, since it is smaller than the sum of its proper divisors (82438548).

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

55308012 is a wasteful number, since it uses less digits than its factorization.

55308012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3422 (or 3420 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 55308012 is about 7436.9356592618. The cubic root of 55308012 is about 381.0038370801.

Adding to 55308012 its reverse (21080355), we get a palindrome (76388367).

The spelling of 55308012 in words is "fifty-five million, three hundred eight thousand, twelve".