30053321 has 4 divisors (see below), whose sum is σ = 30149652. Its totient is φ = 29956992.

The previous prime is 30053311. The next prime is 30053339. The reversal of 30053321 is 12335003.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 774400 + 29278921 = 880^2 + 5411^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30053321 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 30053321.

It is not an unprimeable number, because it can be changed into a prime (30053311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47696 + ... + 48321.

It is an arithmetic number, because the mean of its divisors is an integer number (7537413).

Almost surely, 2^30053321 is an apocalyptic number.

It is an amenable number.

30053321 is a deficient number, since it is larger than the sum of its proper divisors (96331).

30053321 is an equidigital number, since it uses as much as digits as its factorization.

30053321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96330.

The product of its (nonzero) digits is 270, while the sum is 17.

The square root of 30053321 is about 5482.0909332115. The cubic root of 30053321 is about 310.9072313540.

Adding to 30053321 its reverse (12335003), we get a palindrome (42388324).

The spelling of 30053321 in words is "thirty million, fifty-three thousand, three hundred twenty-one".