51460 has 24 divisors (see below), whose sum is σ = 112896. Its totient is φ = 19680.
The previous prime is 51449. The next prime is 51461. The reversal of 51460 is 6415.
It is not an unprimeable number, because it can be changed into a prime (51461) by changing a digit.
51460 is an untouchable number, because it is not equal to the sum of proper divisors of any number.
It is a pernicious number, because its binary representation contains a prime number (5) of ones.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 579 + ... + 661.
It is an arithmetic number, because the mean of its divisors is an integer number (4704).
251460 is an apocalyptic number.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 51460, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (56448).
51460 is an abundant number, since it is smaller than the sum of its proper divisors (61436).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
51460 is a wasteful number, since it uses less digits than its factorization.
51460 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 123 (or 121 counting only the distinct ones).
The product of its (nonzero) digits is 120, while the sum is 16.
The square root of 51460 is about 226.8479667090. The cubic root of 51460 is about 37.1954594219.
Adding to 51460 its reverse (6415), we get a palindrome (57875).
The spelling of 51460 in words is "fifty-one thousand, four hundred sixty".
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