54278240 has 24 divisors (see below), whose sum is σ = 128232720. Its totient is φ = 21711232.

The previous prime is 54278239. The next prime is 54278243. The reversal of 54278240 is 4287245.

It is a super-2 number, since 2×54278240² = 5892254674995200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a zygodrome in base 2.

It is a junction number, because it is equal to n+sod(n) for n = 54278197 and 54278206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54278243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 169460 + ... + 169779.

It is an arithmetic number, because the mean of its divisors is an integer number (5343030).

Almost surely, 2^54278240 is an apocalyptic number.

It is an amenable number.

54278240 is an abundant number, since it is smaller than the sum of its proper divisors (73954480).

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

54278240 is a wasteful number, since it uses less digits than its factorization.

54278240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 339254 (or 339246 counting only the distinct ones).

The product of its (nonzero) digits is 17920, while the sum is 32.

The square root of 54278240 is about 7367.3767380256. The cubic root of 54278240 is about 378.6243891392.

The spelling of 54278240 in words is "fifty-four million, two hundred seventy-eight thousand, two hundred forty".