51100055600 has 60 divisors (see below), whose sum is σ = 133928611800. Its totient is φ = 18581836800.

The previous prime is 51100055597. The next prime is 51100055623. The reversal of 51100055600 is 655000115.

It is a super-2 number, since 2×51100055600² (a number of 22 digits) contains 22 as substring.

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 11 ways as a sum of consecutive naturals, for example, 5802425 + ... + 5811224.

It is an arithmetic number, because the mean of its divisors is an integer number (2232143530).

Almost surely, 2^51100055600 is an apocalyptic number.

51100055600 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

51100055600 is an abundant number, since it is smaller than the sum of its proper divisors (82828556200).

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

51100055600 is a wasteful number, since it uses less digits than its factorization.

51100055600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11613678 (or 11613667 counting only the distinct ones).

The product of its (nonzero) digits is 750, while the sum is 23.

Adding to 51100055600 its reverse (655000115), we get a palindrome (51755055715).

The spelling of 51100055600 in words is "fifty-one billion, one hundred million, fifty-five thousand, six hundred".