30055393 has 2 divisors, whose sum is σ = 30055394. Its totient is φ = 30055392.

The previous prime is 30055391. The next prime is 30055429. The reversal of 30055393 is 39355003.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19079424 + 10975969 = 4368^2 + 3313^2 .

It is a cyclic number.

It is not a de Polignac number, because 30055393 - 2¹ = 30055391 is a prime.

Together with 30055391, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (30055391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15027696 + 15027697.

It is an arithmetic number, because the mean of its divisors is an integer number (15027697).

Almost surely, 2^30055393 is an apocalyptic number.

It is an amenable number.

30055393 is a deficient number, since it is larger than the sum of its proper divisors (1).

30055393 is an equidigital number, since it uses as much as digits as its factorization.

30055393 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6075, while the sum is 28.

The square root of 30055393 is about 5482.2799089430. The cubic root of 30055393 is about 310.9143762658.

The spelling of 30055393 in words is "thirty million, fifty-five thousand, three hundred ninety-three".