51707 has 4 divisors (see below), whose sum is σ = 53520. Its totient is φ = 49896.

The previous prime is 51691. The next prime is 51713. The reversal of 51707 is 70715.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 70715 = 5 ⋅14143.

It is a cyclic number.

It is not a de Polignac number, because 51707 - 2⁴ = 51691 is a prime.

It is a super-2 number, since 2×51707² = 5347227698, which contains 22 as substring.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 51707.

It is not an unprimeable number, because it can be changed into a prime (51767) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 863 + ... + 920.

It is an arithmetic number, because the mean of its divisors is an integer number (13380).

2⁵¹⁷⁰⁷ is an apocalyptic number.

51707 is a deficient number, since it is larger than the sum of its proper divisors (1813).

51707 is a wasteful number, since it uses less digits than its factorization.

51707 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1812.

The product of its (nonzero) digits is 245, while the sum is 20.

The square root of 51707 is about 227.3917324794. The cubic root of 51707 is about 37.2548752684.

The spelling of 51707 in words is "fifty-one thousand, seven hundred seven".