54778394 has 12 divisors (see below), whose sum is σ = 90316842. Its totient is φ = 24899160.

The previous prime is 54778393. The next prime is 54778439. The reversal of 54778394 is 49387745.

54778394 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 only one way, i.e., 32092225 + 22686169 = 5665^2 + 4763^2 .

It is not an unprimeable number, because it can be changed into a prime (54778391) 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 in 5 ways as a sum of consecutive naturals, for example, 112937 + ... + 113420.

Almost surely, 2^54778394 is an apocalyptic number.

54778394 is a deficient number, since it is larger than the sum of its proper divisors (35538448).

54778394 is a wasteful number, since it uses less digits than its factorization.

54778394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226381 (or 226370 counting only the distinct ones).

The product of its digits is 846720, while the sum is 47.

The square root of 54778394 is about 7401.2427334874. The cubic root of 54778394 is about 379.7837966807.

The spelling of 54778394 in words is "fifty-four million, seven hundred seventy-eight thousand, three hundred ninety-four".