30132251 has 2 divisors, whose sum is σ = 30132252. Its totient is φ = 30132250.

The previous prime is 30132209. The next prime is 30132269. The reversal of 30132251 is 15223103.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30132251 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (30132451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15066125 + 15066126.

It is an arithmetic number, because the mean of its divisors is an integer number (15066126).

Almost surely, 2^30132251 is an apocalyptic number.

30132251 is a deficient number, since it is larger than the sum of its proper divisors (1).

30132251 is an equidigital number, since it uses as much as digits as its factorization.

30132251 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 180, while the sum is 17.

The square root of 30132251 is about 5489.2851082814. The cubic root of 30132251 is about 311.1791752960.

Adding to 30132251 its reverse (15223103), we get a palindrome (45355354).

The spelling of 30132251 in words is "thirty million, one hundred thirty-two thousand, two hundred fifty-one".