30072517 has 2 divisors, whose sum is σ = 30072518. Its totient is φ = 30072516.

The previous prime is 30072503. The next prime is 30072529. The reversal of 30072517 is 71527003.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23097636 + 6974881 = 4806^2 + 2641^2 .

It is a cyclic number.

It is not a de Polignac number, because 30072517 - 2⁷ = 30072389 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 30072491 and 30072500.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30072587) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15036258 + 15036259.

It is an arithmetic number, because the mean of its divisors is an integer number (15036259).

Almost surely, 2^30072517 is an apocalyptic number.

It is an amenable number.

30072517 is a deficient number, since it is larger than the sum of its proper divisors (1).

30072517 is an equidigital number, since it uses as much as digits as its factorization.

30072517 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1470, while the sum is 25.

The square root of 30072517 is about 5483.8414455562. The cubic root of 30072517 is about 310.9734126698.

The spelling of 30072517 in words is "thirty million, seventy-two thousand, five hundred seventeen".