248071457 has 2 divisors, whose sum is σ = 248071458. Its totient is φ = 248071456.

The previous prime is 248071451. The next prime is 248071489. The reversal of 248071457 is 754170842.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 191656336 + 56415121 = 13844^2 + 7511^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-248071457 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 248071457.

It is not a weakly prime, because it can be changed into another prime (248071451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 124035728 + 124035729.

It is an arithmetic number, because the mean of its divisors is an integer number (124035729).

Almost surely, 2^248071457 is an apocalyptic number.

It is an amenable number.

248071457 is a deficient number, since it is larger than the sum of its proper divisors (1).

248071457 is an equidigital number, since it uses as much as digits as its factorization.

248071457 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 62720, while the sum is 38.

The square root of 248071457 is about 15750.2843466396. The cubic root of 248071457 is about 628.3364670593.

It can be divided in two parts, 2480 and 71457, that added together give a palindrome (73937).

The spelling of 248071457 in words is "two hundred forty-eight million, seventy-one thousand, four hundred fifty-seven".