51706 has 8 divisors (see below), whose sum is σ = 78624. Its totient is φ = 25500.

The previous prime is 51691. The next prime is 51713. The reversal of 51706 is 60715.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 81 + ... + 331.

It is an arithmetic number, because the mean of its divisors is an integer number (9828).

2⁵¹⁷⁰⁶ is an apocalyptic number.

51706 is a deficient number, since it is larger than the sum of its proper divisors (26918).

51706 is a wasteful number, since it uses less digits than its factorization.

51706 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 356.

The product of its (nonzero) digits is 210, while the sum is 19.

The square root of 51706 is about 227.3895336202. The cubic root of 51706 is about 37.2546351003.

Subtracting 51706 from its reverse (60715), we obtain a palindrome (9009).

It can be divided in two parts, 51 and 706, that added together give a palindrome (757).

The spelling of 51706 in words is "fifty-one thousand, seven hundred six".