30258161 has 2 divisors, whose sum is σ = 30258162. Its totient is φ = 30258160.

The previous prime is 30258157. The next prime is 30258167. The reversal of 30258161 is 16185203.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15358561 + 14899600 = 3919^2 + 3860^2 .

It is an emirp because it is prime and its reverse (16185203) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 30258161 - 2² = 30258157 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 30258161.

It is not a weakly prime, because it can be changed into another prime (30258167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15129080 + 15129081.

It is an arithmetic number, because the mean of its divisors is an integer number (15129081).

Almost surely, 2^30258161 is an apocalyptic number.

It is an amenable number.

30258161 is a deficient number, since it is larger than the sum of its proper divisors (1).

30258161 is an equidigital number, since it uses as much as digits as its factorization.

30258161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 30258161 is about 5500.7418590586. The cubic root of 30258161 is about 311.6120019403.

The spelling of 30258161 in words is "thirty million, two hundred fifty-eight thousand, one hundred sixty-one".