30005161 has 4 divisors (see below), whose sum is σ = 31584400. Its totient is φ = 28425924.

The previous prime is 30005159. The next prime is 30005167. The reversal of 30005161 is 16150003.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 30005161 - 2¹ = 30005159 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30005167) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 789591 + ... + 789628.

It is an arithmetic number, because the mean of its divisors is an integer number (7896100).

Almost surely, 2^30005161 is an apocalyptic number.

It is an amenable number.

30005161 is a deficient number, since it is larger than the sum of its proper divisors (1579239).

30005161 is a wasteful number, since it uses less digits than its factorization.

30005161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1579238.

The product of its (nonzero) digits is 90, while the sum is 16.

The square root of 30005161 is about 5477.6966874773. The cubic root of 30005161 is about 310.7410678259.

Adding to 30005161 its reverse (16150003), we get a palindrome (46155164).

The spelling of 30005161 in words is "thirty million, five thousand, one hundred sixty-one".