51550424500 has 48 divisors (see below), whose sum is σ = 112633178112. Its totient is φ = 20611552800.

The previous prime is 51550424477. The next prime is 51550424533. The reversal of 51550424500 is 542405515.

It is a super-2 number, since 2×51550424500² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1251229 + ... + 1291771.

It is an arithmetic number, because the mean of its divisors is an integer number (2346524544).

Almost surely, 2^51550424500 is an apocalyptic number.

51550424500 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

51550424500 is an abundant number, since it is smaller than the sum of its proper divisors (61082753612).

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

51550424500 is a wasteful number, since it uses less digits than its factorization.

51550424500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43105 (or 43093 counting only the distinct ones).

The product of its (nonzero) digits is 20000, while the sum is 31.

The spelling of 51550424500 in words is "fifty-one billion, five hundred fifty million, four hundred twenty-four thousand, five hundred".