55078864 has 20 divisors (see below), whose sum is σ = 106840260. Its totient is φ = 27507200.

The previous prime is 55078823. The next prime is 55078873. The reversal of 55078864 is 46887055.

55078864 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 44890000 + 10188864 = 6700^2 + 3192^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 55078864.

It is a congruent number.

It is an unprimeable number.

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, 18264 + ... + 21064.

It is an arithmetic number, because the mean of its divisors is an integer number (5342013).

Almost surely, 2^55078864 is an apocalyptic number.

It is an amenable number.

55078864 is a deficient number, since it is larger than the sum of its proper divisors (51761396).

55078864 is a wasteful number, since it uses less digits than its factorization.

55078864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4038 (or 4032 counting only the distinct ones).

The product of its (nonzero) digits is 268800, while the sum is 43.

The square root of 55078864 is about 7421.5135922533. The cubic root of 55078864 is about 380.4769265658.

The spelling of 55078864 in words is "fifty-five million, seventy-eight thousand, eight hundred sixty-four".