55821592040 has 16 divisors (see below), whose sum is σ = 125598582180. Its totient is φ = 22328636800.

The previous prime is 55821592033. The next prime is 55821592063. The reversal of 55821592040 is 4029512855.

It can be written as a sum of positive squares in 2 ways, for example, as 55205261764 + 616330276 = 234958^2 + 24826^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 697769861 + ... + 697769940.

Almost surely, 2^55821592040 is an apocalyptic number.

It is an amenable number.

55821592040 is an abundant number, since it is smaller than the sum of its proper divisors (69776990140).

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

55821592040 is a wasteful number, since it uses less digits than its factorization.

55821592040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1395539812 (or 1395539808 counting only the distinct ones).

The product of its (nonzero) digits is 144000, while the sum is 41.

The spelling of 55821592040 in words is "fifty-five billion, eight hundred twenty-one million, five hundred ninety-two thousand, forty".