54778280 has 16 divisors (see below), whose sum is σ = 123251220. Its totient is φ = 21911296.

The previous prime is 54778231. The next prime is 54778307. The reversal of 54778280 is 8287745.

54778280 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 54434884 + 343396 = 7378^2 + 586^2 .

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, 684689 + ... + 684768.

Almost surely, 2^54778280 is an apocalyptic number.

It is an amenable number.

54778280 is an abundant number, since it is smaller than the sum of its proper divisors (68472940).

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

54778280 is a wasteful number, since it uses less digits than its factorization.

54778280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1369468 (or 1369464 counting only the distinct ones).

The product of its (nonzero) digits is 125440, while the sum is 41.

The square root of 54778280 is about 7401.2350320740. The cubic root of 54778280 is about 379.7835332229.

The spelling of 54778280 in words is "fifty-four million, seven hundred seventy-eight thousand, two hundred eighty".