55666016 has 24 divisors (see below), whose sum is σ = 125249040. Its totient is φ = 23856768.

The previous prime is 55665989. The next prime is 55666021. The reversal of 55666016 is 61066655.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 124031 + ... + 124478.

It is an arithmetic number, because the mean of its divisors is an integer number (5218710).

Almost surely, 2^55666016 is an apocalyptic number.

55666016 is a gapful number since it is divisible by the number (56) formed by its first and last digit.

It is an amenable number.

55666016 is an abundant number, since it is smaller than the sum of its proper divisors (69583024).

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

55666016 is a wasteful number, since it uses less digits than its factorization.

55666016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 248526 (or 248518 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 35.

The square root of 55666016 is about 7460.9661572748. The cubic root of 55666016 is about 381.8241380504.

The spelling of 55666016 in words is "fifty-five million, six hundred sixty-six thousand, sixteen".