54208440 has 336 divisors, whose sum is σ = 216020520. Its totient is φ = 12130560.

The previous prime is 54208439. The next prime is 54208459. The reversal of 54208440 is 4480245.

54208440 is a `hidden beast` number, since 542 + 0 + 84 + 40 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 83 ways as a sum of consecutive naturals, for example, 4169874 + ... + 4169886.

Almost surely, 2^54208440 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 54208440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (108010260).

54208440 is an abundant number, since it is smaller than the sum of its proper divisors (161812080).

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

54208440 is a wasteful number, since it uses less digits than its factorization.

54208440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66 (or 34 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 27.

The square root of 54208440 is about 7362.6381141545. The cubic root of 54208440 is about 378.4620200882.

Adding to 54208440 its reverse (4480245), we get a palindrome (58688685).

The spelling of 54208440 in words is "fifty-four million, two hundred eight thousand, four hundred forty".