30053191 has 4 divisors (see below), whose sum is σ = 34346512. Its totient is φ = 25759872.

The previous prime is 30053183. The next prime is 30053201. The reversal of 30053191 is 19135003.

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

It is a cyclic number.

It is not a de Polignac number, because 30053191 - 2³ = 30053183 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30053131) 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, 2146650 + ... + 2146663.

It is an arithmetic number, because the mean of its divisors is an integer number (8586628).

Almost surely, 2^30053191 is an apocalyptic number.

30053191 is a deficient number, since it is larger than the sum of its proper divisors (4293321).

30053191 is an equidigital number, since it uses as much as digits as its factorization.

30053191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4293320.

The product of its (nonzero) digits is 405, while the sum is 22.

The square root of 30053191 is about 5482.0790764089. The cubic root of 30053191 is about 310.9067830619.

Adding to 30053191 its reverse (19135003), we get a palindrome (49188194).

The spelling of 30053191 in words is "thirty million, fifty-three thousand, one hundred ninety-one".