54403440 has 320 divisors, whose sum is σ = 215986176. Its totient is φ = 11022336.

The previous prime is 54403421. The next prime is 54403499. The reversal of 54403440 is 4430445.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 54403440.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1026454 + ... + 1026506.

Almost surely, 2^54403440 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 54403440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (107993088).

54403440 is an abundant number, since it is smaller than the sum of its proper divisors (161582736).

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

54403440 is a wasteful number, since it uses less digits than its factorization.

54403440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136 (or 130 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 24.

The square root of 54403440 is about 7375.8687623900. The cubic root of 54403440 is about 378.9152814774.

Adding to 54403440 its reverse (4430445), we get a palindrome (58833885).

The spelling of 54403440 in words is "fifty-four million, four hundred three thousand, four hundred forty".