305270249 has 2 divisors, whose sum is σ = 305270250. Its totient is φ = 305270248.

The previous prime is 305270243. The next prime is 305270257. The reversal of 305270249 is 942072503.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 294740224 + 10530025 = 17168^2 + 3245^2 .

It is a cyclic number.

It is not a de Polignac number, because 305270249 - 2¹² = 305266153 is a prime.

It is not a weakly prime, because it can be changed into another prime (305270243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 152635124 + 152635125.

It is an arithmetic number, because the mean of its divisors is an integer number (152635125).

Almost surely, 2^305270249 is an apocalyptic number.

It is an amenable number.

305270249 is a deficient number, since it is larger than the sum of its proper divisors (1).

305270249 is an equidigital number, since it uses as much as digits as its factorization.

305270249 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15120, while the sum is 32.

The square root of 305270249 is about 17471.9846897827. The cubic root of 305270249 is about 673.3303031974.

The spelling of 305270249 in words is "three hundred five million, two hundred seventy thousand, two hundred forty-nine".