248291 has 2 divisors, whose sum is σ = 248292. Its totient is φ = 248290.

The previous prime is 248267. The next prime is 248293. The reversal of 248291 is 192842.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-248291 is a prime.

It is a Sophie Germain prime.

Together with 248293, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 248291.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 248291.

It is not a weakly prime, because it can be changed into another prime (248293) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 124145 + 124146.

It is an arithmetic number, because the mean of its divisors is an integer number (124146).

2²⁴⁸²⁹¹ is an apocalyptic number.

248291 is a deficient number, since it is larger than the sum of its proper divisors (1).

248291 is an equidigital number, since it uses as much as digits as its factorization.

248291 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1152, while the sum is 26.

The square root of 248291 is about 498.2880692933. The cubic root of 248291 is about 62.8521771461.

The spelling of 248291 in words is "two hundred forty-eight thousand, two hundred ninety-one".