55558672 has 40 divisors (see below), whose sum is σ = 116867520. Its totient is φ = 25434240.

The previous prime is 55558667. The next prime is 55558691. The reversal of 55558672 is 27685555.

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 7 ways as a sum of consecutive naturals, for example, 26229 + ... + 28267.

It is an arithmetic number, because the mean of its divisors is an integer number (2921688).

Almost surely, 2^55558672 is an apocalyptic number.

55558672 is a gapful number since it is divisible by the number (52) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55558672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58433760).

55558672 is an abundant number, since it is smaller than the sum of its proper divisors (61308848).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55558672 is a wasteful number, since it uses less digits than its factorization.

55558672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2191 (or 2185 counting only the distinct ones).

The product of its digits is 420000, while the sum is 43.

The square root of 55558672 is about 7453.7689795163. The cubic root of 55558672 is about 381.5785489277.

The spelling of 55558672 in words is "fifty-five million, five hundred fifty-eight thousand, six hundred seventy-two".