51521331041 has 8 divisors (see below), whose sum is σ = 52416219840. Its totient is φ = 50627163888.

The previous prime is 51521331007. The next prime is 51521331109. The reversal of 51521331041 is 14013312515.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51521331041 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 51521331041.

It is not an unprimeable number, because it can be changed into a prime (51521331341) 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 7 ways as a sum of consecutive naturals, for example, 35381 + ... + 322946.

It is an arithmetic number, because the mean of its divisors is an integer number (6552027480).

Almost surely, 2^51521331041 is an apocalyptic number.

It is an amenable number.

51521331041 is a deficient number, since it is larger than the sum of its proper divisors (894888799).

51521331041 is a wasteful number, since it uses less digits than its factorization.

51521331041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 360823.

The product of its (nonzero) digits is 1800, while the sum is 26.

Adding to 51521331041 its reverse (14013312515), we get a palindrome (65534643556).

The spelling of 51521331041 in words is "fifty-one billion, five hundred twenty-one million, three hundred thirty-one thousand, forty-one".