30504247 has 2 divisors, whose sum is σ = 30504248. Its totient is φ = 30504246.

The previous prime is 30504241. The next prime is 30504251. The reversal of 30504247 is 74240503.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 30504247 - 2⁷ = 30504119 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30504241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15252123 + 15252124.

It is an arithmetic number, because the mean of its divisors is an integer number (15252124).

Almost surely, 2^30504247 is an apocalyptic number.

30504247 is a deficient number, since it is larger than the sum of its proper divisors (1).

30504247 is an equidigital number, since it uses as much as digits as its factorization.

30504247 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3360, while the sum is 25.

The square root of 30504247 is about 5523.0650005228. The cubic root of 30504247 is about 312.4544897992.

The spelling of 30504247 in words is "thirty million, five hundred four thousand, two hundred forty-seven".