55669566 has 16 divisors (see below), whose sum is σ = 111679488. Its totient is φ = 18499800.

The previous prime is 55669517. The next prime is 55669613. The reversal of 55669566 is 66596655.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12030 + ... + 16001.

It is an arithmetic number, because the mean of its divisors is an integer number (6979968).

Almost surely, 2^55669566 is an apocalyptic number.

55669566 is an abundant number, since it is smaller than the sum of its proper divisors (56009922).

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

55669566 is a wasteful number, since it uses less digits than its factorization.

55669566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28367.

The product of its digits is 1458000, while the sum is 48.

The square root of 55669566 is about 7461.2040583273. The cubic root of 55669566 is about 381.8322545937.

The spelling of 55669566 in words is "fifty-five million, six hundred sixty-nine thousand, five hundred sixty-six".