54721887456 has 96 divisors (see below), whose sum is σ = 148721384448. Its totient is φ = 17599518720.

The previous prime is 54721887433. The next prime is 54721887457. The reversal of 54721887456 is 65478812745.

It is a tau number, because it is divible by the number of its divisors (96).

It is a junction number, because it is equal to n+sod(n) for n = 54721887396 and 54721887405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54721887457) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 975631 + ... + 1030193.

It is an arithmetic number, because the mean of its divisors is an integer number (1549181088).

Almost surely, 2^54721887456 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 54721887456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74360692224).

54721887456 is an abundant number, since it is smaller than the sum of its proper divisors (93999496992).

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

54721887456 is a wasteful number, since it uses less digits than its factorization.

54721887456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54944 (or 54936 counting only the distinct ones).

The product of its digits is 15052800, while the sum is 57.

The spelling of 54721887456 in words is "fifty-four billion, seven hundred twenty-one million, eight hundred eighty-seven thousand, four hundred fifty-six".