248057857 has 2 divisors, whose sum is σ = 248057858. Its totient is φ = 248057856.

The previous prime is 248057837. The next prime is 248057881. The reversal of 248057857 is 758750842.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 243859456 + 4198401 = 15616^2 + 2049^2 .

It is a cyclic number.

It is not a de Polignac number, because 248057857 - 2¹¹ = 248055809 is a prime.

It is not a weakly prime, because it can be changed into another prime (248057807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 124028928 + 124028929.

It is an arithmetic number, because the mean of its divisors is an integer number (124028929).

Almost surely, 2^248057857 is an apocalyptic number.

It is an amenable number.

248057857 is a deficient number, since it is larger than the sum of its proper divisors (1).

248057857 is an equidigital number, since it uses as much as digits as its factorization.

248057857 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 627200, while the sum is 46.

The square root of 248057857 is about 15749.8526024849. The cubic root of 248057857 is about 628.3249844375.

The spelling of 248057857 in words is "two hundred forty-eight million, fifty-seven thousand, eight hundred fifty-seven".