51722 has 8 divisors (see below), whose sum is σ = 84672.
Its totient is φ = 23500.
The previous prime is 51721. The next prime is 51749. The reversal of 51722 is 22715.
It is a sphenic number, since it is the product of 3 distinct primes.
It is a self number, because there is not a number n which added to its sum of digits gives 51722.
It is not an unprimeable number, because it can be changed into a prime (51721) 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, 1154 + ... + 1197.
It is an arithmetic number, because the mean of its divisors is an integer number (10584).
251722 is an apocalyptic number.
51722 is a deficient number, since it is larger than the sum of its proper divisors (32950).
51722 is a wasteful number, since it uses less digits than its factorization.
51722 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 2364.
The product of its digits is 140, while the sum is 17.
The square root of 51722 is about 227.4247128172.
The cubic root of 51722 is about 37.2584774183.
The spelling of 51722 in words is "fifty-one thousand, seven hundred twenty-two".