51683244621 has 8 divisors (see below), whose sum is σ = 71287234080. Its totient is φ = 33267375792.

The previous prime is 51683244589. The next prime is 51683244659. The reversal of 51683244621 is 12644238615.

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

It is not a de Polignac number, because 51683244621 - 2⁵ = 51683244589 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51683244661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 297030055 + ... + 297030228.

It is an arithmetic number, because the mean of its divisors is an integer number (8910904260).

Almost surely, 2^51683244621 is an apocalyptic number.

It is an amenable number.

51683244621 is a deficient number, since it is larger than the sum of its proper divisors (19603989459).

51683244621 is a wasteful number, since it uses less digits than its factorization.

51683244621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 594060315.

The product of its digits is 276480, while the sum is 42.

The spelling of 51683244621 in words is "fifty-one billion, six hundred eighty-three million, two hundred forty-four thousand, six hundred twenty-one".