51504215054 has 16 divisors (see below), whose sum is σ = 80645029920. Its totient is φ = 24623364480.

The previous prime is 51504215051. The next prime is 51504215099. The reversal of 51504215054 is 45051240515.

It is a self number, because there is not a number n which added to its sum of digits gives 51504215054.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51504215051) 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 7 ways as a sum of consecutive naturals, for example, 79607 + ... + 330674.

It is an arithmetic number, because the mean of its divisors is an integer number (5040314370).

Almost surely, 2^51504215054 is an apocalyptic number.

51504215054 is a deficient number, since it is larger than the sum of its proper divisors (29140814866).

51504215054 is a wasteful number, since it uses less digits than its factorization.

51504215054 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 413035.

The product of its (nonzero) digits is 20000, while the sum is 32.

Adding to 51504215054 its reverse (45051240515), we get a palindrome (96555455569).

The spelling of 51504215054 in words is "fifty-one billion, five hundred four million, two hundred fifteen thousand, fifty-four".