54591000440 has 64 divisors (see below), whose sum is σ = 130410000000. Its totient is φ = 20495812608.

The previous prime is 54591000437. The next prime is 54591000461. The reversal of 54591000440 is 4400019545.

It is a junction number, because it is equal to n+sod(n) for n = 54591000397 and 54591000406.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 140186 + ... + 358934.

It is an arithmetic number, because the mean of its divisors is an integer number (2037656250).

Almost surely, 2^54591000440 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 54591000440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (65205000000).

54591000440 is an abundant number, since it is smaller than the sum of its proper divisors (75818999560).

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

54591000440 is a wasteful number, since it uses less digits than its factorization.

54591000440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219144 (or 219140 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 32.

Adding to 54591000440 its reverse (4400019545), we get a palindrome (58991019985).

The spelling of 54591000440 in words is "fifty-four billion, five hundred ninety-one million, four hundred forty", and thus it is an aban number.