51330420041 has 8 divisors (see below), whose sum is σ = 54395435304. Its totient is φ = 48270469120.

The previous prime is 51330420019. The next prime is 51330420049. The reversal of 51330420041 is 14002403315.

It can be written as a sum of positive squares in 4 ways, for example, as 15933760441 + 35396659600 = 126229^2 + 188140^2 .

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

It is not a de Polignac number, because 51330420041 - 2³⁰ = 50256678217 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51330419989 and 51330420016.

It is not an unprimeable number, because it can be changed into a prime (51330420049) 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, 1245200 + ... + 1285761.

It is an arithmetic number, because the mean of its divisors is an integer number (6799429413).

Almost surely, 2^51330420041 is an apocalyptic number.

It is an amenable number.

51330420041 is a deficient number, since it is larger than the sum of its proper divisors (3065015263).

51330420041 is a wasteful number, since it uses less digits than its factorization.

51330420041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2532171.

The product of its (nonzero) digits is 1440, while the sum is 23.

Adding to 51330420041 its reverse (14002403315), we get a palindrome (65332823356).

The spelling of 51330420041 in words is "fifty-one billion, three hundred thirty million, four hundred twenty thousand, forty-one".