55056818 has 4 divisors (see below), whose sum is σ = 82585230. Its totient is φ = 27528408.

The previous prime is 55056773. The next prime is 55056821. The reversal of 55056818 is 81865055.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 81865055 = 5 ⋅16373011.

It can be written as a sum of positive squares in only one way, i.e., 38353249 + 16703569 = 6193^2 + 4087^2 .

It is a Curzon 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 as a sum of consecutive naturals, namely, 13764203 + ... + 13764206.

Almost surely, 2^55056818 is an apocalyptic number.

55056818 is a deficient number, since it is larger than the sum of its proper divisors (27528412).

55056818 is a wasteful number, since it uses less digits than its factorization.

55056818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27528411.

The product of its (nonzero) digits is 48000, while the sum is 38.

The square root of 55056818 is about 7420.0281670624. The cubic root of 55056818 is about 380.4261562516.

The spelling of 55056818 in words is "fifty-five million, fifty-six thousand, eight hundred eighteen".