55979816 has 32 divisors (see below), whose sum is σ = 108300000. Its totient is φ = 27107136.

The previous prime is 55979771. The next prime is 55979839. The reversal of 55979816 is 61897955.

It is a happy number.

55979816 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 7 ways as a sum of consecutive naturals, for example, 111935 + ... + 112433.

It is an arithmetic number, because the mean of its divisors is an integer number (3384375).

Almost surely, 2^55979816 is an apocalyptic number.

It is an amenable number.

55979816 is a deficient number, since it is larger than the sum of its proper divisors (52320184).

55979816 is a wasteful number, since it uses less digits than its factorization.

55979816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 921 (or 917 counting only the distinct ones).

The product of its digits is 680400, while the sum is 50.

The square root of 55979816 is about 7481.9660517808. The cubic root of 55979816 is about 382.5402660274.

The spelling of 55979816 in words is "fifty-five million, nine hundred seventy-nine thousand, eight hundred sixteen".