30272509 has 2 divisors, whose sum is σ = 30272510. Its totient is φ = 30272508.

The previous prime is 30272503. The next prime is 30272513. The reversal of 30272509 is 90527203.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 29127609 + 1144900 = 5397^2 + 1070^2 .

It is a cyclic number.

It is not a de Polignac number, because 30272509 - 2¹³ = 30264317 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 (30272503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15136254 + 15136255.

It is an arithmetic number, because the mean of its divisors is an integer number (15136255).

Almost surely, 2^30272509 is an apocalyptic number.

It is an amenable number.

30272509 is a deficient number, since it is larger than the sum of its proper divisors (1).

30272509 is an equidigital number, since it uses as much as digits as its factorization.

30272509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3780, while the sum is 28.

The square root of 30272509 is about 5502.0458922114. The cubic root of 30272509 is about 311.6612481860.

The spelling of 30272509 in words is "thirty million, two hundred seventy-two thousand, five hundred nine".