305072077 has 2 divisors, whose sum is σ = 305072078. Its totient is φ = 305072076.

The previous prime is 305072063. The next prime is 305072101. The reversal of 305072077 is 770270503.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 275194921 + 29877156 = 16589^2 + 5466^2 .

It is an emirp because it is prime and its reverse (770270503) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-305072077 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (305072777) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 152536038 + 152536039.

It is an arithmetic number, because the mean of its divisors is an integer number (152536039).

Almost surely, 2^305072077 is an apocalyptic number.

It is an amenable number.

305072077 is a deficient number, since it is larger than the sum of its proper divisors (1).

305072077 is an equidigital number, since it uses as much as digits as its factorization.

305072077 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10290, while the sum is 31.

The square root of 305072077 is about 17466.3126331805. The cubic root of 305072077 is about 673.1845699248.

The spelling of 305072077 in words is "three hundred five million, seventy-two thousand, seventy-seven".