248217287 has 2 divisors, whose sum is σ = 248217288. Its totient is φ = 248217286.

The previous prime is 248217283. The next prime is 248217317. The reversal of 248217287 is 782712842.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 248217287 - 2² = 248217283 is a prime.

It is a super-2 number, since 2×248217287² = 123223643131280738, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (248217283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 124108643 + 124108644.

It is an arithmetic number, because the mean of its divisors is an integer number (124108644).

Almost surely, 2^248217287 is an apocalyptic number.

248217287 is a deficient number, since it is larger than the sum of its proper divisors (1).

248217287 is an equidigital number, since it uses as much as digits as its factorization.

248217287 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 100352, while the sum is 41.

The square root of 248217287 is about 15754.9131067106. The cubic root of 248217287 is about 628.4595664797.

The spelling of 248217287 in words is "two hundred forty-eight million, two hundred seventeen thousand, two hundred eighty-seven".