30220277 has 2 divisors, whose sum is σ = 30220278. Its totient is φ = 30220276.

The previous prime is 30220273. The next prime is 30220327. The reversal of 30220277 is 77202203.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15673681 + 14546596 = 3959^2 + 3814^2 .

It is a cyclic number.

It is not a de Polignac number, because 30220277 - 2² = 30220273 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30220273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15110138 + 15110139.

It is an arithmetic number, because the mean of its divisors is an integer number (15110139).

Almost surely, 2^30220277 is an apocalyptic number.

It is an amenable number.

30220277 is a deficient number, since it is larger than the sum of its proper divisors (1).

30220277 is an equidigital number, since it uses as much as digits as its factorization.

30220277 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1176, while the sum is 23.

The square root of 30220277 is about 5497.2972450105. The cubic root of 30220277 is about 311.4818988663.

The spelling of 30220277 in words is "thirty million, two hundred twenty thousand, two hundred seventy-seven".