55558028 has 6 divisors (see below), whose sum is σ = 97226556. Its totient is φ = 27779012.

The previous prime is 55558001. The next prime is 55558031. The reversal of 55558028 is 82085555.

It is a junction number, because it is equal to n+sod(n) for n = 55557982 and 55558000.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6944750 + ... + 6944757.

It is an arithmetic number, because the mean of its divisors is an integer number (16204426).

Almost surely, 2^55558028 is an apocalyptic number.

It is an amenable number.

55558028 is a deficient number, since it is larger than the sum of its proper divisors (41668528).

55558028 is a wasteful number, since it uses less digits than its factorization.

55558028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13889511 (or 13889509 counting only the distinct ones).

The product of its (nonzero) digits is 80000, while the sum is 38.

The square root of 55558028 is about 7453.7257797695. The cubic root of 55558028 is about 381.5770745852.

The spelling of 55558028 in words is "fifty-five million, five hundred fifty-eight thousand, twenty-eight".