54278778 has 32 divisors (see below), whose sum is σ = 115349760. Its totient is φ = 16994880.

The previous prime is 54278747. The next prime is 54278779. The reversal of 54278778 is 87787245.

It is a happy number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (54278779) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2223 + ... + 10653.

It is an arithmetic number, because the mean of its divisors is an integer number (3604680).

Almost surely, 2^54278778 is an apocalyptic number.

54278778 is a gapful number since it is divisible by the number (58) formed by its first and last digit.

54278778 is an abundant number, since it is smaller than the sum of its proper divisors (61070982).

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

54278778 is a wasteful number, since it uses less digits than its factorization.

54278778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8502.

The product of its digits is 878080, while the sum is 48.

The square root of 54278778 is about 7367.4132502528. The cubic root of 54278778 is about 378.6256400963.

The spelling of 54278778 in words is "fifty-four million, two hundred seventy-eight thousand, seven hundred seventy-eight".