54281440 has 48 divisors (see below), whose sum is σ = 129548160. Its totient is φ = 21491200.

The previous prime is 54281431. The next prime is 54281467. The reversal of 54281440 is 4418245.

It is a junction number, because it is equal to n+sod(n) for n = 54281399 and 54281408.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 14481 + ... + 17839.

It is an arithmetic number, because the mean of its divisors is an integer number (2698920).

Almost surely, 2^54281440 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 54281440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (64774080).

54281440 is an abundant number, since it is smaller than the sum of its proper divisors (75266720).

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

54281440 is a wasteful number, since it uses less digits than its factorization.

54281440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3475 (or 3467 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 28.

The square root of 54281440 is about 7367.5939084616. The cubic root of 54281440 is about 378.6318296546.

Adding to 54281440 its reverse (4418245), we get a palindrome (58699685).

The spelling of 54281440 in words is "fifty-four million, two hundred eighty-one thousand, four hundred forty".