54081440 has 96 divisors (see below), whose sum is σ = 147692160. Its totient is φ = 18330624.

The previous prime is 54081439. The next prime is 54081451. The reversal of 54081440 is 4418045.

54081440 = T₄₁₄ + T₄₁₅ + ... + T₇₃₃.

54081440 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 15 ways as a sum of consecutive naturals, for example, 121859 + ... + 122301.

It is an arithmetic number, because the mean of its divisors is an integer number (1538460).

Almost surely, 2^54081440 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 54081440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (73846080).

54081440 is an abundant number, since it is smaller than the sum of its proper divisors (93610720).

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

54081440 is a wasteful number, since it uses less digits than its factorization.

54081440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 574 (or 566 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 26.

The square root of 54081440 is about 7354.0084307811. The cubic root of 54081440 is about 378.1662342848.

Adding to 54081440 its reverse (4418045), we get a palindrome (58499485).

The spelling of 54081440 in words is "fifty-four million, eighty-one thousand, four hundred forty".