51550303013 has 4 divisors (see below), whose sum is σ = 56236694208. Its totient is φ = 46863911820.

The previous prime is 51550303009. The next prime is 51550303027. The reversal of 51550303013 is 31030305515.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 51550303013 - 2² = 51550303009 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51550305013) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 2343195581 + ... + 2343195602.

It is an arithmetic number, because the mean of its divisors is an integer number (14059173552).

Almost surely, 2^51550303013 is an apocalyptic number.

It is an amenable number.

51550303013 is a deficient number, since it is larger than the sum of its proper divisors (4686391195).

51550303013 is a wasteful number, since it uses less digits than its factorization.

51550303013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4686391194.

The product of its (nonzero) digits is 3375, while the sum is 26.

Adding to 51550303013 its reverse (31030305515), we get a palindrome (82580608528).

The spelling of 51550303013 in words is "fifty-one billion, five hundred fifty million, three hundred three thousand, thirteen".