51305504501 has 16 divisors (see below), whose sum is σ = 54674611200. Its totient is φ = 47976096000.

The previous prime is 51305504443. The next prime is 51305504531. The reversal of 51305504501 is 10540550315.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51305504501 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51305504531) 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 15 ways as a sum of consecutive naturals, for example, 2504900 + ... + 2525298.

It is an arithmetic number, because the mean of its divisors is an integer number (3417163200).

Almost surely, 2^51305504501 is an apocalyptic number.

It is an amenable number.

51305504501 is a deficient number, since it is larger than the sum of its proper divisors (3369106699).

51305504501 is a wasteful number, since it uses less digits than its factorization.

51305504501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21364.

The product of its (nonzero) digits is 7500, while the sum is 29.

The spelling of 51305504501 in words is "fifty-one billion, three hundred five million, five hundred four thousand, five hundred one".