51550042213 has 8 divisors (see below), whose sum is σ = 52874791200. Its totient is φ = 50231016528.

The previous prime is 51550042189. The next prime is 51550042237. The reversal of 51550042213 is 31224005515.

It is an interprime number because it is at equal distance from previous prime (51550042189) and next prime (51550042237).

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

It is a cyclic number.

It is not a de Polignac number, because 51550042213 - 2¹⁷ = 51549911141 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 (51550042273) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1412578 + ... + 1448611.

It is an arithmetic number, because the mean of its divisors is an integer number (6609348900).

Almost surely, 2^51550042213 is an apocalyptic number.

It is an amenable number.

51550042213 is a deficient number, since it is larger than the sum of its proper divisors (1324748987).

51550042213 is a wasteful number, since it uses less digits than its factorization.

51550042213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2861651.

The product of its (nonzero) digits is 6000, while the sum is 28.

Adding to 51550042213 its reverse (31224005515), we get a palindrome (82774047728).

The spelling of 51550042213 in words is "fifty-one billion, five hundred fifty million, forty-two thousand, two hundred thirteen".