55286866 has 4 divisors (see below), whose sum is σ = 82930302. Its totient is φ = 27643432.

The previous prime is 55286851. The next prime is 55286867. The reversal of 55286866 is 66868255.

55286866 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 66868255 = 5 ⋅13373651.

It can be written as a sum of positive squares in only one way, i.e., 54449641 + 837225 = 7379^2 + 915^2 .

It is not an unprimeable number, because it can be changed into a prime (55286867) 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 as a sum of consecutive naturals, namely, 13821715 + ... + 13821718.

Almost surely, 2^55286866 is an apocalyptic number.

55286866 is a deficient number, since it is larger than the sum of its proper divisors (27643436).

55286866 is a wasteful number, since it uses less digits than its factorization.

55286866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27643435.

The product of its digits is 691200, while the sum is 46.

The square root of 55286866 is about 7435.5138356404. The cubic root of 55286866 is about 380.9552742900.

The spelling of 55286866 in words is "fifty-five million, two hundred eighty-six thousand, eight hundred sixty-six".