30252991 has 2 divisors, whose sum is σ = 30252992. Its totient is φ = 30252990.

The previous prime is 30252967. The next prime is 30253019. The reversal of 30252991 is 19925203.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 30252991 - 2⁷ = 30252863 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30252491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15126495 + 15126496.

It is an arithmetic number, because the mean of its divisors is an integer number (15126496).

Almost surely, 2^30252991 is an apocalyptic number.

30252991 is a deficient number, since it is larger than the sum of its proper divisors (1).

30252991 is an equidigital number, since it uses as much as digits as its factorization.

30252991 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4860, while the sum is 31.

The square root of 30252991 is about 5500.2719023699. The cubic root of 30252991 is about 311.5942532761.

The spelling of 30252991 in words is "thirty million, two hundred fifty-two thousand, nine hundred ninety-one".