30151249 has 2 divisors, whose sum is σ = 30151250. Its totient is φ = 30151248.

The previous prime is 30151243. The next prime is 30151259. The reversal of 30151249 is 94215103.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18861649 + 11289600 = 4343^2 + 3360^2 .

It is an emirp because it is prime and its reverse (94215103) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 30151249 - 2¹¹ = 30149201 is a prime.

It is not a weakly prime, because it can be changed into another prime (30151243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15075624 + 15075625.

It is an arithmetic number, because the mean of its divisors is an integer number (15075625).

Almost surely, 2^30151249 is an apocalyptic number.

It is an amenable number.

30151249 is a deficient number, since it is larger than the sum of its proper divisors (1).

30151249 is an equidigital number, since it uses as much as digits as its factorization.

30151249 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 30151249 is about 5491.0152977387. The cubic root of 30151249 is about 311.2445597238.

The spelling of 30151249 in words is "thirty million, one hundred fifty-one thousand, two hundred forty-nine".