It is a strong prime.
It is a cyclic number.
It is a de Polignac number, because none of the positive numbers 2k-7901 is a prime.
It is a Sophie Germain prime.
It is a Chen prime.
It is a Curzon number.
It is a plaindrome in base 13.
It is a self number, because there is not a number n which added to its sum of digits gives 7901.
It is a congruent number.
27901 is an apocalyptic number.
It is an amenable number.
7901 is an equidigital number, since it uses as much as digits as its factorization.
7901 is an evil number, because the sum of its binary digits is even.
The square root of 7901 is about 88.8875694347. The cubic root of 7901 is about 19.9171573284.
Adding to 7901 its reverse (1097), we get a palindrome (8998).
The spelling of 7901 in words is "seven thousand, nine hundred one".