51670 has 8 divisors (see below), whose sum is σ = 93024. Its totient is φ = 20664.

The previous prime is 51659. The next prime is 51673. The reversal of 51670 is 7615.

51670 = 41² + 42² + ... + 60².

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51673) by changing a digit.

51670 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2574 + ... + 2593.

It is an arithmetic number, because the mean of its divisors is an integer number (11628).

2⁵¹⁶⁷⁰ is an apocalyptic number.

51670 is a deficient number, since it is larger than the sum of its proper divisors (41354).

51670 is a wasteful number, since it uses less digits than its factorization.

51670 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5174.

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

The square root of 51670 is about 227.3103605206. The cubic root of 51670 is about 37.2459869857.

The spelling of 51670 in words is "fifty-one thousand, six hundred seventy".