30252947 has 2 divisors, whose sum is σ = 30252948. Its totient is φ = 30252946.

The previous prime is 30252923. The next prime is 30252949. The reversal of 30252947 is 74925203.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (74925203) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30252947 is a prime.

Together with 30252949, it forms a pair of twin primes.

It is a Chen prime.

It is equal to p_1872608 and since 30252947 and 1872608 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (30252949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15126473 + 15126474.

It is an arithmetic number, because the mean of its divisors is an integer number (15126474).

Almost surely, 2^30252947 is an apocalyptic number.

30252947 is a deficient number, since it is larger than the sum of its proper divisors (1).

30252947 is an equidigital number, since it uses as much as digits as its factorization.

30252947 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15120, while the sum is 32.

The square root of 30252947 is about 5500.2679025662. The cubic root of 30252947 is about 311.5941022150.

The spelling of 30252947 in words is "thirty million, two hundred fifty-two thousand, nine hundred forty-seven".