55009912 has 16 divisors (see below), whose sum is σ = 104450400. Its totient is φ = 27156480.

The previous prime is 55009901. The next prime is 55009939. The reversal of 55009912 is 21990055.

55009912 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42889 + ... + 44152.

It is an arithmetic number, because the mean of its divisors is an integer number (6528150).

Almost surely, 2^55009912 is an apocalyptic number.

It is an amenable number.

55009912 is a deficient number, since it is larger than the sum of its proper divisors (49440488).

55009912 is a wasteful number, since it uses less digits than its factorization.

55009912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87126 (or 87122 counting only the distinct ones).

The product of its (nonzero) digits is 4050, while the sum is 31.

The square root of 55009912 is about 7416.8667238936. The cubic root of 55009912 is about 380.3180900765.

Adding to 55009912 its reverse (21990055), we get a palindrome (76999967).

The spelling of 55009912 in words is "fifty-five million, nine thousand, nine hundred twelve".