248497811 has 2 divisors, whose sum is σ = 248497812. Its totient is φ = 248497810.

The previous prime is 248497807. The next prime is 248497813. The reversal of 248497811 is 118794842.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 248497811 - 2² = 248497807 is a prime.

It is a Sophie Germain prime.

Together with 248497813, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (248497813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 124248905 + 124248906.

It is an arithmetic number, because the mean of its divisors is an integer number (124248906).

Almost surely, 2^248497811 is an apocalyptic number.

248497811 is a deficient number, since it is larger than the sum of its proper divisors (1).

248497811 is an equidigital number, since it uses as much as digits as its factorization.

248497811 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 129024, while the sum is 44.

The square root of 248497811 is about 15763.8133394176. The cubic root of 248497811 is about 628.6962295805.

The spelling of 248497811 in words is "two hundred forty-eight million, four hundred ninety-seven thousand, eight hundred eleven".