51868727 has 8 divisors (see below), whose sum is σ = 55494960. Its totient is φ = 48332160.

The previous prime is 51868699. The next prime is 51868759. The reversal of 51868727 is 72786815.

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-51868727 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51868027) 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, 21218 + ... + 23535.

It is an arithmetic number, because the mean of its divisors is an integer number (6936870).

Almost surely, 2^51868727 is an apocalyptic number.

51868727 is a deficient number, since it is larger than the sum of its proper divisors (3626233).

51868727 is a wasteful number, since it uses less digits than its factorization.

51868727 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44833.

The product of its digits is 188160, while the sum is 44.

The square root of 51868727 is about 7201.9946542607. The cubic root of 51868727 is about 372.9367625858.

The spelling of 51868727 in words is "fifty-one million, eight hundred sixty-eight thousand, seven hundred twenty-seven".