55017128 has 16 divisors (see below), whose sum is σ = 103272000. Its totient is φ = 27477936.

The previous prime is 55017091. The next prime is 55017133. The reversal of 55017128 is 82171055.

It is a self number, because there is not a number n which added to its sum of digits gives 55017128.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5003 + ... + 11621.

It is an arithmetic number, because the mean of its divisors is an integer number (6454500).

Almost surely, 2^55017128 is an apocalyptic number.

It is an amenable number.

55017128 is a deficient number, since it is larger than the sum of its proper divisors (48254872).

55017128 is a wasteful number, since it uses less digits than its factorization.

55017128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7664 (or 7660 counting only the distinct ones).

The product of its (nonzero) digits is 2800, while the sum is 29.

The square root of 55017128 is about 7417.3531667300. The cubic root of 55017128 is about 380.3347189303.

The spelling of 55017128 in words is "fifty-five million, seventeen thousand, one hundred twenty-eight".