51241 has 2 divisors, whose sum is σ = 51242.
Its totient is φ = 51240.
The previous prime is 51239. The next prime is 51257. The reversal of 51241 is 14215.
Adding to 51241 its reverse (14215), we get a palindrome (65456).
It can be divided in two parts, 51 and 241, that added together give a palindrome (292).
51241 is nontrivially palindromic in base 11.
It is a weak prime.
It can be written as a sum of positive squares in only one way, i.e., 42025 + 9216 = 205^2 + 96^2
It is a cyclic number.
It is not a de Polignac number, because 51241 - 21 = 51239 is a prime.
Together with 51239, it forms a pair of twin primes.
It is not a weakly prime, because it can be changed into another prime (51341) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25620 + 25621.
It is an arithmetic number, because the mean of its divisors is an integer number (25621).
251241 is an apocalyptic number.
It is an amenable number.
51241 is a deficient number, since it is larger than the sum of its proper divisors (1).
51241 is an equidigital number, since it uses as much as digits as its factorization.
51241 is an evil number, because the sum of its binary digits is even.
The product of its digits is 40, while the sum is 13.
The square root of 51241 is about 226.3647499060.
The cubic root of 51241 is about 37.1426197505.
The spelling of 51241 in words is "fifty-one thousand, two hundred forty-one".