51687327 has 8 divisors (see below), whose sum is σ = 72970416. Its totient is φ = 32431232.

The previous prime is 51687287. The next prime is 51687329. The reversal of 51687327 is 72378615.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51687327 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51687329) 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, 506688 + ... + 506789.

It is an arithmetic number, because the mean of its divisors is an integer number (9121302).

Almost surely, 2^51687327 is an apocalyptic number.

51687327 is a deficient number, since it is larger than the sum of its proper divisors (21283089).

51687327 is a wasteful number, since it uses less digits than its factorization.

51687327 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1013497.

The product of its digits is 70560, while the sum is 39.

The square root of 51687327 is about 7189.3898906653. The cubic root of 51687327 is about 372.5014987253.

It can be divided in two parts, 51 and 687327, that added together give a triangular number (687378 = T₁₁₇₂).

The spelling of 51687327 in words is "fifty-one million, six hundred eighty-seven thousand, three hundred twenty-seven".