55921844484 has 81 divisors (see below), whose sum is σ = 155420347719. Its totient is φ = 16941283920.

The previous prime is 55921844431. The next prime is 55921844497. The reversal of 55921844484 is 48444812955.

The square root of 55921844484 is 236478.

It is a perfect power (a square), and thus also a powerful number.

55921844484 is a `hidden beast` number, since 5 + 592 + 1 + 8 + 4 + 4 + 48 + 4 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 55921844484.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 15605757 + ... + 15609339.

Almost surely, 2^55921844484 is an apocalyptic number.

55921844484 is the 236478-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55921844484

55921844484 is an abundant number, since it is smaller than the sum of its proper divisors (99498503235).

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

55921844484 is a wasteful number, since it uses less digits than its factorization.

55921844484 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7198 (or 3599 counting only the distinct ones).

The product of its digits is 7372800, while the sum is 54.

The spelling of 55921844484 in words is "fifty-five billion, nine hundred twenty-one million, eight hundred forty-four thousand, four hundred eighty-four".