54278280 has 288 divisors, whose sum is σ = 218476440. Its totient is φ = 11612160.

The previous prime is 54278243. The next prime is 54278317. The reversal of 54278280 is 8287245.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (54278243) and next prime (54278317).

It can be written as a sum of positive squares in 4 ways, for example, as 34082244 + 20196036 = 5838^2 + 4494^2 .

It is a super-2 number, since 2×54278280² = 5892263359516800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

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 71 ways as a sum of consecutive naturals, for example, 299790 + ... + 299970.

Almost surely, 2^54278280 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 54278280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (109238220).

54278280 is an abundant number, since it is smaller than the sum of its proper divisors (164198160).

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

54278280 is a wasteful number, since it uses less digits than its factorization.

54278280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 229 (or 215 counting only the distinct ones).

The product of its (nonzero) digits is 35840, while the sum is 36.

The square root of 54278280 is about 7367.3794526955. The cubic root of 54278280 is about 378.6244821474.

The spelling of 54278280 in words is "fifty-four million, two hundred seventy-eight thousand, two hundred eighty".