248957321 has 2 divisors, whose sum is σ = 248957322. Its totient is φ = 248957320.

The previous prime is 248957279. The next prime is 248957329. The reversal of 248957321 is 123759842.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 241367296 + 7590025 = 15536^2 + 2755^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-248957321 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (248957329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 124478660 + 124478661.

It is an arithmetic number, because the mean of its divisors is an integer number (124478661).

Almost surely, 2^248957321 is an apocalyptic number.

It is an amenable number.

248957321 is a deficient number, since it is larger than the sum of its proper divisors (1).

248957321 is an equidigital number, since it uses as much as digits as its factorization.

248957321 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 120960, while the sum is 41.

The square root of 248957321 is about 15778.3814442420. The cubic root of 248957321 is about 629.0835090734.

The spelling of 248957321 in words is "two hundred forty-eight million, nine hundred fifty-seven thousand, three hundred twenty-one".