248258861 has 2 divisors, whose sum is σ = 248258862. Its totient is φ = 248258860.

The previous prime is 248258851. The next prime is 248258869. The reversal of 248258861 is 168852842.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 210975625 + 37283236 = 14525^2 + 6106^2 .

It is a cyclic number.

It is not a de Polignac number, because 248258861 - 2¹⁸ = 247996717 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (248258869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 124129430 + 124129431.

It is an arithmetic number, because the mean of its divisors is an integer number (124129431).

Almost surely, 2^248258861 is an apocalyptic number.

It is an amenable number.

248258861 is a deficient number, since it is larger than the sum of its proper divisors (1).

248258861 is an equidigital number, since it uses as much as digits as its factorization.

248258861 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 245760, while the sum is 44.

The square root of 248258861 is about 15756.2324494151. The cubic root of 248258861 is about 628.4946514917.

The spelling of 248258861 in words is "two hundred forty-eight million, two hundred fifty-eight thousand, eight hundred sixty-one".