54678905 has 4 divisors (see below), whose sum is σ = 65614692. Its totient is φ = 43743120.

The previous prime is 54678863. The next prime is 54678913. The reversal of 54678905 is 50987645.

54678905 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.

It can be written as a sum of positive squares in 2 ways, for example, as 23464336 + 31214569 = 4844^2 + 5587^2 .

It is not a de Polignac number, because 54678905 - 2⁸ = 54678649 is a prime.

It is a Duffinian 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, 5467886 + ... + 5467895.

It is an arithmetic number, because the mean of its divisors is an integer number (16403673).

Almost surely, 2^54678905 is an apocalyptic number.

It is an amenable number.

54678905 is a deficient number, since it is larger than the sum of its proper divisors (10935787).

54678905 is a wasteful number, since it uses less digits than its factorization.

54678905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10935786.

The product of its (nonzero) digits is 302400, while the sum is 44.

The square root of 54678905 is about 7394.5185779738. The cubic root of 54678905 is about 379.5537351228.

The spelling of 54678905 in words is "fifty-four million, six hundred seventy-eight thousand, nine hundred five".