54845440 has 112 divisors (see below), whose sum is σ = 143121888. Its totient is φ = 20054016.

The previous prime is 54845437. The next prime is 54845447. The reversal of 54845440 is 4454845.

It is a junction number, because it is equal to n+sod(n) for n = 54845396 and 54845405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54845447) 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 7 ways as a sum of consecutive naturals, for example, 532429 + ... + 532531.

It is an arithmetic number, because the mean of its divisors is an integer number (1277874).

Almost surely, 2^54845440 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 54845440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (71560944).

54845440 is an abundant number, since it is smaller than the sum of its proper divisors (88276448).

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

54845440 is a wasteful number, since it uses less digits than its factorization.

54845440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147 (or 123 counting only the distinct ones).

The product of its (nonzero) digits is 51200, while the sum is 34.

The square root of 54845440 is about 7405.7707228890. The cubic root of 54845440 is about 379.9386789324.

The spelling of 54845440 in words is "fifty-four million, eight hundred forty-five thousand, four hundred forty".