30090171 has 4 divisors (see below), whose sum is σ = 40120232. Its totient is φ = 20060112.

The previous prime is 30090163. The next prime is 30090173. The reversal of 30090171 is 17109003.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17109003 = 3 ⋅5703001.

It is not a de Polignac number, because 30090171 - 2³ = 30090163 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30090173) 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, 5015026 + ... + 5015031.

It is an arithmetic number, because the mean of its divisors is an integer number (10030058).

Almost surely, 2^30090171 is an apocalyptic number.

30090171 is a deficient number, since it is larger than the sum of its proper divisors (10030061).

30090171 is a wasteful number, since it uses less digits than its factorization.

30090171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10030060.

The product of its (nonzero) digits is 189, while the sum is 21.

The square root of 30090171 is about 5485.4508474691. The cubic root of 30090171 is about 311.0342528348.

Adding to 30090171 its reverse (17109003), we get a palindrome (47199174).

The spelling of 30090171 in words is "thirty million, ninety thousand, one hundred seventy-one".