245751271 has 2 divisors, whose sum is σ = 245751272. Its totient is φ = 245751270.

The previous prime is 245751227. The next prime is 245751283. The reversal of 245751271 is 172157542.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 245751271 - 2¹¹ = 245749223 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (245751971) 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, 122875635 + 122875636.

It is an arithmetic number, because the mean of its divisors is an integer number (122875636).

Almost surely, 2^245751271 is an apocalyptic number.

245751271 is a deficient number, since it is larger than the sum of its proper divisors (1).

245751271 is an equidigital number, since it uses as much as digits as its factorization.

245751271 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 19600, while the sum is 34.

The square root of 245751271 is about 15676.4559451427. The cubic root of 245751271 is about 626.3714065097.

The spelling of 245751271 in words is "two hundred forty-five million, seven hundred fifty-one thousand, two hundred seventy-one".