51055050500 has 24 divisors (see below), whose sum is σ = 111504231384. Its totient is φ = 20422020000.

The previous prime is 51055050491. The next prime is 51055050523. The reversal of 51055050500 is 505055015.

It can be written as a sum of positive squares in 4 ways, for example, as 2195484736 + 48859565764 = 46856^2 + 221042^2 .

It is a Smith number, since the sum of its digits (26) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 51055050500.

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 7 ways as a sum of consecutive naturals, for example, 51054551 + ... + 51055550.

It is an arithmetic number, because the mean of its divisors is an integer number (4646009641).

Almost surely, 2^51055050500 is an apocalyptic number.

51055050500 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

51055050500 is an abundant number, since it is smaller than the sum of its proper divisors (60449180884).

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

51055050500 is a wasteful number, since it uses less digits than its factorization.

51055050500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102110120 (or 102110108 counting only the distinct ones).

The product of its (nonzero) digits is 3125, while the sum is 26.

The spelling of 51055050500 in words is "fifty-one billion, fifty-five million, fifty thousand, five hundred".