305338057 has 2 divisors, whose sum is σ = 305338058. Its totient is φ = 305338056.

The previous prime is 305338051. The next prime is 305338069. The reversal of 305338057 is 750833503.

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., 274101136 + 31236921 = 16556^2 + 5589^2 .

It is a cyclic number.

It is not a de Polignac number, because 305338057 - 2²³ = 296949449 is a prime.

It is not a weakly prime, because it can be changed into another prime (305338051) 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, 152669028 + 152669029.

It is an arithmetic number, because the mean of its divisors is an integer number (152669029).

Almost surely, 2^305338057 is an apocalyptic number.

It is an amenable number.

305338057 is a deficient number, since it is larger than the sum of its proper divisors (1).

305338057 is an equidigital number, since it uses as much as digits as its factorization.

305338057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 37800, while the sum is 34.

The square root of 305338057 is about 17473.9250599286. The cubic root of 305338057 is about 673.3801538911.

The spelling of 305338057 in words is "three hundred five million, three hundred thirty-eight thousand, fifty-seven".