55106666 has 8 divisors (see below), whose sum is σ = 86253984. Its totient is φ = 26355340.

The previous prime is 55106663. The next prime is 55106671. The reversal of 55106666 is 66660155.

55106666 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

55106666 is a modest number, since divided by 6666 gives 5510 as remainder.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (55106663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 598940 + ... + 599031.

It is an arithmetic number, because the mean of its divisors is an integer number (10781748).

Almost surely, 2^55106666 is an apocalyptic number.

55106666 is a deficient number, since it is larger than the sum of its proper divisors (31147318).

55106666 is a wasteful number, since it uses less digits than its factorization.

55106666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1197996.

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

The square root of 55106666 is about 7423.3864239981. The cubic root of 55106666 is about 380.5409332127.

The spelling of 55106666 in words is "fifty-five million, one hundred six thousand, six hundred sixty-six".