305021149 has 2 divisors, whose sum is σ = 305021150. Its totient is φ = 305021148.

The previous prime is 305021077. The next prime is 305021161. The reversal of 305021149 is 941120503.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 156425049 + 148596100 = 12507^2 + 12190^2 .

It is a cyclic number.

It is not a de Polignac number, because 305021149 - 2²⁵ = 271466717 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (305021179) 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, 152510574 + 152510575.

It is an arithmetic number, because the mean of its divisors is an integer number (152510575).

Almost surely, 2^305021149 is an apocalyptic number.

It is an amenable number.

305021149 is a deficient number, since it is larger than the sum of its proper divisors (1).

305021149 is an equidigital number, since it uses as much as digits as its factorization.

305021149 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 305021149 is about 17464.8546801856. The cubic root of 305021149 is about 673.1471079015.

The spelling of 305021149 in words is "three hundred five million, twenty-one thousand, one hundred forty-nine".