51715 has 4 divisors (see below), whose sum is σ = 62064. Its totient is φ = 41368.

The previous prime is 51713. The next prime is 51719.

51715 is nontrivially palindromic in base 10.

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 51715 - 2¹ = 51713 is a prime.

It is a Duffinian number.

It is a plaindrome in base 14.

It is a junction number, because it is equal to n+sod(n) for n = 51692 and 51701.

It is not an unprimeable number, because it can be changed into a prime (51713) 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, 5167 + ... + 5176.

It is an arithmetic number, because the mean of its divisors is an integer number (15516).

2⁵¹⁷¹⁵ is an apocalyptic number.

51715 is a deficient number, since it is larger than the sum of its proper divisors (10349).

51715 is a wasteful number, since it uses less digits than its factorization.

51715 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10348.

The product of its digits is 175, while the sum is 19.

The square root of 51715 is about 227.4093225881. The cubic root of 51715 is about 37.2567965017.

The spelling of 51715 in words is "fifty-one thousand, seven hundred fifteen".