305420077 has 2 divisors, whose sum is σ = 305420078. Its totient is φ = 305420076.

The previous prime is 305420047. The next prime is 305420123. The reversal of 305420077 is 770024503.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 273373156 + 32046921 = 16534^2 + 5661^2 .

It is a cyclic number.

It is not a de Polignac number, because 305420077 - 2⁷ = 305419949 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (305420047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 152710038 + 152710039.

It is an arithmetic number, because the mean of its divisors is an integer number (152710039).

Almost surely, 2^305420077 is an apocalyptic number.

It is an amenable number.

305420077 is a deficient number, since it is larger than the sum of its proper divisors (1).

305420077 is an equidigital number, since it uses as much as digits as its factorization.

305420077 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5880, while the sum is 28.

The square root of 305420077 is about 17476.2718278241. The cubic root of 305420077 is about 673.4404430191.

The spelling of 305420077 in words is "three hundred five million, four hundred twenty thousand, seventy-seven".