51715727 has 6 divisors (see below), whose sum is σ = 60159168. Its totient is φ = 44327724.

The previous prime is 51715709. The next prime is 51715747. The reversal of 51715727 is 72751715.

It is a happy number.

It is not a de Polignac number, because 51715727 - 2¹² = 51711631 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 (51715747) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 527663 + ... + 527760.

It is an arithmetic number, because the mean of its divisors is an integer number (10026528).

Almost surely, 2^51715727 is an apocalyptic number.

51715727 is a deficient number, since it is larger than the sum of its proper divisors (8443441).

51715727 is a wasteful number, since it uses less digits than its factorization.

51715727 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1055437 (or 1055430 counting only the distinct ones).

The product of its digits is 17150, while the sum is 35.

The square root of 51715727 is about 7191.3647522567. The cubic root of 51715727 is about 372.5697108396.

The spelling of 51715727 in words is "fifty-one million, seven hundred fifteen thousand, seven hundred twenty-seven".