51871327 has 4 divisors (see below), whose sum is σ = 52189720. Its totient is φ = 51552936.

The previous prime is 51871319. The next prime is 51871331. The reversal of 51871327 is 72317815.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 51871327 - 2³ = 51871319 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51871292 and 51871301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51871307) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 158952 + ... + 159277.

It is an arithmetic number, because the mean of its divisors is an integer number (13047430).

Almost surely, 2^51871327 is an apocalyptic number.

51871327 is a deficient number, since it is larger than the sum of its proper divisors (318393).

51871327 is a wasteful number, since it uses less digits than its factorization.

51871327 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 318392.

The product of its digits is 11760, while the sum is 34.

The square root of 51871327 is about 7202.1751575479. The cubic root of 51871327 is about 372.9429938253.

The spelling of 51871327 in words is "fifty-one million, eight hundred seventy-one thousand, three hundred twenty-seven".