54408540 has 24 divisors (see below), whose sum is σ = 152344080. Its totient is φ = 14508928.

The previous prime is 54408539. The next prime is 54408577. The reversal of 54408540 is 4580445.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 54408498 and 54408507.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 453345 + ... + 453464.

It is an arithmetic number, because the mean of its divisors is an integer number (6347670).

Almost surely, 2^54408540 is an apocalyptic number.

It is an amenable number.

54408540 is an abundant number, since it is smaller than the sum of its proper divisors (97935540).

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

54408540 is a wasteful number, since it uses less digits than its factorization.

54408540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 906821 (or 906819 counting only the distinct ones).

The product of its (nonzero) digits is 12800, while the sum is 30.

The square root of 54408540 is about 7376.2144762744. The cubic root of 54408540 is about 378.9271214613.

Adding to 54408540 its reverse (4580445), we get a palindrome (58988985).

The spelling of 54408540 in words is "fifty-four million, four hundred eight thousand, five hundred forty".