51500020054 has 8 divisors (see below), whose sum is σ = 88285748688. Its totient is φ = 22071437160.

The previous prime is 51500020051. The next prime is 51500020109. The reversal of 51500020054 is 45002000515.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51500020051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1839286417 + ... + 1839286444.

It is an arithmetic number, because the mean of its divisors is an integer number (11035718586).

Almost surely, 2^51500020054 is an apocalyptic number.

51500020054 is a deficient number, since it is larger than the sum of its proper divisors (36785728634).

51500020054 is a wasteful number, since it uses less digits than its factorization.

51500020054 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3678572870.

The product of its (nonzero) digits is 1000, while the sum is 22.

Adding to 51500020054 its reverse (45002000515), we get a palindrome (96502020569).

The spelling of 51500020054 in words is "fifty-one billion, five hundred million, twenty thousand, fifty-four".