248775049 has 2 divisors, whose sum is σ = 248775050. Its totient is φ = 248775048.

The previous prime is 248775047. The next prime is 248775083. The reversal of 248775049 is 940577842.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 227798649 + 20976400 = 15093^2 + 4580^2 .

It is a cyclic number.

It is not a de Polignac number, because 248775049 - 2¹ = 248775047 is a prime.

Together with 248775047, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (248775041) 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, 124387524 + 124387525.

It is an arithmetic number, because the mean of its divisors is an integer number (124387525).

Almost surely, 2^248775049 is an apocalyptic number.

It is an amenable number.

248775049 is a deficient number, since it is larger than the sum of its proper divisors (1).

248775049 is an equidigital number, since it uses as much as digits as its factorization.

248775049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 564480, while the sum is 46.

The square root of 248775049 is about 15772.6043822826. The cubic root of 248775049 is about 628.9299455311.

The spelling of 248775049 in words is "two hundred forty-eight million, seven hundred seventy-five thousand, forty-nine".