51446 has 8 divisors (see below), whose sum is σ = 79920.
Its totient is φ = 24808.
The previous prime is 51439. The next prime is 51449. The reversal of 51446 is 64415.
It is a happy number.
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 (51449) by changing a digit.
51446 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, 386 + ... + 501.
It is an arithmetic number, because the mean of its divisors is an integer number (9990).
251446 is an apocalyptic number.
51446 is a deficient number, since it is larger than the sum of its proper divisors (28474).
51446 is a wasteful number, since it uses less digits than its factorization.
51446 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 918.
The product of its digits is 480, while the sum is 20.
The square root of 51446 is about 226.8171069386.
The cubic root of 51446 is about 37.1920860338.
The spelling of 51446 in words is "fifty-one thousand, four hundred forty-six".