55182728 has 16 divisors (see below), whose sum is σ = 106805760. Its totient is φ = 26701200.

The previous prime is 55182709. The next prime is 55182733. The reversal of 55182728 is 82728155.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 55182691 and 55182700.

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, 111008 + ... + 111503.

It is an arithmetic number, because the mean of its divisors is an integer number (6675360).

Almost surely, 2^55182728 is an apocalyptic number.

It is an amenable number.

55182728 is a deficient number, since it is larger than the sum of its proper divisors (51623032).

55182728 is a wasteful number, since it uses less digits than its factorization.

55182728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222548 (or 222544 counting only the distinct ones).

The product of its digits is 44800, while the sum is 38.

The square root of 55182728 is about 7428.5077909362. The cubic root of 55182728 is about 380.7159356193.

The spelling of 55182728 in words is "fifty-five million, one hundred eighty-two thousand, seven hundred twenty-eight".