54778992 has 20 divisors (see below), whose sum is σ = 141512520. Its totient is φ = 18259648.

The previous prime is 54778973. The next prime is 54779009. The reversal of 54778992 is 29987745.

54778992 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 570567 + ... + 570662.

It is an arithmetic number, because the mean of its divisors is an integer number (7075626).

Almost surely, 2^54778992 is an apocalyptic number.

It is an amenable number.

54778992 is an abundant number, since it is smaller than the sum of its proper divisors (86733528).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

54778992 is a wasteful number, since it uses less digits than its factorization.

54778992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1141240 (or 1141234 counting only the distinct ones).

The product of its digits is 1270080, while the sum is 51.

The square root of 54778992 is about 7401.2831319981. The cubic root of 54778992 is about 379.7851786726.

The spelling of 54778992 in words is "fifty-four million, seven hundred seventy-eight thousand, nine hundred ninety-two".