55316728 has 16 divisors (see below), whose sum is σ = 104301000. Its totient is φ = 27503136.

The previous prime is 55316719. The next prime is 55316731. The reversal of 55316728 is 82761355.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17883 + ... + 20746.

Almost surely, 2^55316728 is an apocalyptic number.

It is an amenable number.

55316728 is a deficient number, since it is larger than the sum of its proper divisors (48984272).

55316728 is a wasteful number, since it uses less digits than its factorization.

55316728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38814 (or 38810 counting only the distinct ones).

The product of its digits is 50400, while the sum is 37.

The square root of 55316728 is about 7437.5216302206. The cubic root of 55316728 is about 381.0238501843.

The spelling of 55316728 in words is "fifty-five million, three hundred sixteen thousand, seven hundred twenty-eight".