51505017201 has 48 divisors (see below), whose sum is σ = 85467545280. Its totient is φ = 29559600000.

The previous prime is 51505017191. The next prime is 51505017203. The reversal of 51505017201 is 10271050515.

51505017201 is a `hidden beast` number, since 5 + 150 + 501 + 7 + 2 + 0 + 1 = 666.

It is not a de Polignac number, because 51505017201 - 2⁵ = 51505017169 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51505017203) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6054451 + ... + 6062951.

It is an arithmetic number, because the mean of its divisors is an integer number (1780573860).

Almost surely, 2^51505017201 is an apocalyptic number.

It is an amenable number.

51505017201 is a deficient number, since it is larger than the sum of its proper divisors (33962528079).

51505017201 is a wasteful number, since it uses less digits than its factorization.

51505017201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11758 (or 11755 counting only the distinct ones).

The product of its (nonzero) digits is 1750, while the sum is 27.

Adding to 51505017201 its reverse (10271050515), we get a palindrome (61776067716).

The spelling of 51505017201 in words is "fifty-one billion, five hundred five million, seventeen thousand, two hundred one".