51704520052 has 12 divisors (see below), whose sum is σ = 95805434340. Its totient is φ = 24331538816.

The previous prime is 51704520047. The next prime is 51704520059. The reversal of 51704520052 is 25002540715.

It can be written as a sum of positive squares in 2 ways, for example, as 46274893456 + 5429626596 = 215116^2 + 73686^2 .

It is a junction number, because it is equal to n+sod(n) for n = 51704519996 and 51704520023.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51704520059) 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 3 ways as a sum of consecutive naturals, for example, 380180227 + ... + 380180362.

It is an arithmetic number, because the mean of its divisors is an integer number (7983786195).

Almost surely, 2^51704520052 is an apocalyptic number.

It is an amenable number.

51704520052 is a deficient number, since it is larger than the sum of its proper divisors (44100914288).

51704520052 is a wasteful number, since it uses less digits than its factorization.

51704520052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 760360610 (or 760360608 counting only the distinct ones).

The product of its (nonzero) digits is 14000, while the sum is 31.

The spelling of 51704520052 in words is "fifty-one billion, seven hundred four million, five hundred twenty thousand, fifty-two".