51055501100 has 18 divisors (see below), whose sum is σ = 110790437604. Its totient is φ = 20422200400.

The previous prime is 51055501099. The next prime is 51055501139. The reversal of 51055501100 is 110555015.

It is a happy number.

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 5 ways as a sum of consecutive naturals, for example, 255277406 + ... + 255277605.

Almost surely, 2^51055501100 is an apocalyptic number.

51055501100 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

51055501100 is an abundant number, since it is smaller than the sum of its proper divisors (59734936504).

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

51055501100 is a wasteful number, since it uses less digits than its factorization.

51055501100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 510555025 (or 510555018 counting only the distinct ones).

The product of its (nonzero) digits is 625, while the sum is 23.

The spelling of 51055501100 in words is "fifty-one billion, fifty-five million, five hundred one thousand, one hundred".