51597219597 has 32 divisors (see below), whose sum is σ = 85965788160. Its totient is φ = 26743192320.

The previous prime is 51597219589. The next prime is 51597219631. The reversal of 51597219597 is 79591279515.

It is not a de Polignac number, because 51597219597 - 2³ = 51597219589 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 51597219597.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51597219097) 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 31 ways as a sum of consecutive naturals, for example, 149772 + ... + 354437.

It is an arithmetic number, because the mean of its divisors is an integer number (2686430880).

Almost surely, 2^51597219597 is an apocalyptic number.

It is an amenable number.

51597219597 is a deficient number, since it is larger than the sum of its proper divisors (34368568563).

51597219597 is a wasteful number, since it uses less digits than its factorization.

51597219597 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 504673.

The product of its digits is 8930250, while the sum is 60.

The spelling of 51597219597 in words is "fifty-one billion, five hundred ninety-seven million, two hundred nineteen thousand, five hundred ninety-seven".