248877997 has 2 divisors, whose sum is σ = 248877998. Its totient is φ = 248877996.

The previous prime is 248877991. The next prime is 248878027. The reversal of 248877997 is 799778842.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 238980681 + 9897316 = 15459^2 + 3146^2 .

It is a cyclic number.

It is not a de Polignac number, because 248877997 - 2⁷ = 248877869 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (248877991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 124438998 + 124438999.

It is an arithmetic number, because the mean of its divisors is an integer number (124438999).

Almost surely, 2^248877997 is an apocalyptic number.

It is an amenable number.

248877997 is a deficient number, since it is larger than the sum of its proper divisors (1).

248877997 is an equidigital number, since it uses as much as digits as its factorization.

248877997 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 14224896, while the sum is 61.

The square root of 248877997 is about 15775.8675514217. The cubic root of 248877997 is about 629.0166880872.

The spelling of 248877997 in words is "two hundred forty-eight million, eight hundred seventy-seven thousand, nine hundred ninety-seven".