248758261 has 2 divisors, whose sum is σ = 248758262. Its totient is φ = 248758260.

The previous prime is 248758247. The next prime is 248758277. The reversal of 248758261 is 162857842.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 214066161 + 34692100 = 14631^2 + 5890^2 .

It is a cyclic number.

It is not a de Polignac number, because 248758261 - 2⁹ = 248757749 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (248758361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 124379130 + 124379131.

It is an arithmetic number, because the mean of its divisors is an integer number (124379131).

Almost surely, 2^248758261 is an apocalyptic number.

It is an amenable number.

248758261 is a deficient number, since it is larger than the sum of its proper divisors (1).

248758261 is an equidigital number, since it uses as much as digits as its factorization.

248758261 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 215040, while the sum is 43.

The square root of 248758261 is about 15772.0721847194. The cubic root of 248758261 is about 628.9157979261.

The spelling of 248758261 in words is "two hundred forty-eight million, seven hundred fifty-eight thousand, two hundred sixty-one".