55558647 has 6 divisors (see below), whose sum is σ = 80251392. Its totient is φ = 37039092.

The previous prime is 55558637. The next prime is 55558651. The reversal of 55558647 is 74685555.

55558647 is a `hidden beast` number, since 55 + 558 + 6 + 47 = 666.

It is not a de Polignac number, because 55558647 - 2⁴ = 55558631 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55558637) by changing a digit.

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 in 5 ways as a sum of consecutive naturals, for example, 3086583 + ... + 3086600.

It is an arithmetic number, because the mean of its divisors is an integer number (13375232).

Almost surely, 2^55558647 is an apocalyptic number.

55558647 is a deficient number, since it is larger than the sum of its proper divisors (24692745).

55558647 is a wasteful number, since it uses less digits than its factorization.

55558647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6173189 (or 6173186 counting only the distinct ones).

The product of its digits is 840000, while the sum is 45.

The square root of 55558647 is about 7453.7673025122. The cubic root of 55558647 is about 381.5784916941.

The spelling of 55558647 in words is "fifty-five million, five hundred fifty-eight thousand, six hundred forty-seven".