54543440 has 80 divisors (see below), whose sum is σ = 146026368. Its totient is φ = 18559488.

The previous prime is 54543431. The next prime is 54543443. The reversal of 54543440 is 4434545.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54543443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 96599 + ... + 97161.

Almost surely, 2^54543440 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 54543440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (73013184).

54543440 is an abundant number, since it is smaller than the sum of its proper divisors (91482928).

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

54543440 is a wasteful number, since it uses less digits than its factorization.

54543440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 756 (or 750 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 29.

The square root of 54543440 is about 7385.3530721286. The cubic root of 54543440 is about 379.2400323893.

Adding to 54543440 its reverse (4434545), we get a palindrome (58977985).

The spelling of 54543440 in words is "fifty-four million, five hundred forty-three thousand, four hundred forty".