30261089 has 2 divisors, whose sum is σ = 30261090. Its totient is φ = 30261088.

The previous prime is 30261047. The next prime is 30261097. The reversal of 30261089 is 98016203.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 29593600 + 667489 = 5440^2 + 817^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30261089 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (30261289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15130544 + 15130545.

It is an arithmetic number, because the mean of its divisors is an integer number (15130545).

Almost surely, 2^30261089 is an apocalyptic number.

It is an amenable number.

30261089 is a deficient number, since it is larger than the sum of its proper divisors (1).

30261089 is an equidigital number, since it uses as much as digits as its factorization.

30261089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 30261089 is about 5501.0079985399. The cubic root of 30261089 is about 311.6220528983.

The spelling of 30261089 in words is "thirty million, two hundred sixty-one thousand, eighty-nine".