51872537247 has 8 divisors (see below), whose sum is σ = 69171720240. Its totient is φ = 34577522880.

The previous prime is 51872537237. The next prime is 51872537251. The reversal of 51872537247 is 74273527815.

51872537247 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 51872537247 - 2⁴ = 51872537231 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 51872537247.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51872537207) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1013004 + ... + 1062977.

It is an arithmetic number, because the mean of its divisors is an integer number (8646465030).

Almost surely, 2^51872537247 is an apocalyptic number.

51872537247 is a deficient number, since it is larger than the sum of its proper divisors (17299182993).

51872537247 is a wasteful number, since it uses less digits than its factorization.

51872537247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2084313.

The product of its digits is 3292800, while the sum is 51.

The spelling of 51872537247 in words is "fifty-one billion, eight hundred seventy-two million, five hundred thirty-seven thousand, two hundred forty-seven".