54778658 has 32 divisors (see below), whose sum is σ = 95644800. Its totient is φ = 23253760.

The previous prime is 54778639. The next prime is 54778667. The reversal of 54778658 is 85687745.

54778658 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 15 ways as a sum of consecutive naturals, for example, 55235 + ... + 56217.

It is an arithmetic number, because the mean of its divisors is an integer number (2988900).

Almost surely, 2^54778658 is an apocalyptic number.

54778658 is a deficient number, since it is larger than the sum of its proper divisors (40866142).

54778658 is a wasteful number, since it uses less digits than its factorization.

54778658 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1162.

The product of its digits is 1881600, while the sum is 50.

The square root of 54778658 is about 7401.2605683086. The cubic root of 54778658 is about 379.7844067921.

The spelling of 54778658 in words is "fifty-four million, seven hundred seventy-eight thousand, six hundred fifty-eight".