55521310500 has 144 divisors (see below), whose sum is σ = 175281475824. Its totient is φ = 14794675200.

The previous prime is 55521310451. The next prime is 55521310543. The reversal of 55521310500 is 501312555.

55521310500 is a `hidden beast` number, since 5 + 552 + 1 + 3 + 105 + 0 + 0 = 666.

It can be written as a sum of positive squares in 8 ways, for example, as 36505452096 + 19015858404 = 191064^2 + 137898^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 7362732 + ... + 7370268.

It is an arithmetic number, because the mean of its divisors is an integer number (1217232471).

Almost surely, 2^55521310500 is an apocalyptic number.

55521310500 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55521310500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (87640737912).

55521310500 is an abundant number, since it is smaller than the sum of its proper divisors (119760165324).

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

55521310500 is a wasteful number, since it uses less digits than its factorization.

55521310500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9199 (or 9184 counting only the distinct ones).

The product of its (nonzero) digits is 3750, while the sum is 27.

The spelling of 55521310500 in words is "fifty-five billion, five hundred twenty-one million, three hundred ten thousand, five hundred".