30152173 has 4 divisors (see below), whose sum is σ = 30201660. Its totient is φ = 30102688.

The previous prime is 30152147. The next prime is 30152189. The reversal of 30152173 is 37125103.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 37125103 = 271 ⋅136993.

It can be written as a sum of positive squares in 2 ways, for example, as 3247204 + 26904969 = 1802^2 + 5187^2 .

It is a cyclic number.

It is not a de Polignac number, because 30152173 - 2⁹ = 30151661 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 (30152123) 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, 23818 + ... + 25051.

It is an arithmetic number, because the mean of its divisors is an integer number (7550415).

Almost surely, 2^30152173 is an apocalyptic number.

It is an amenable number.

30152173 is a deficient number, since it is larger than the sum of its proper divisors (49487).

30152173 is an equidigital number, since it uses as much as digits as its factorization.

30152173 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49486.

The product of its (nonzero) digits is 630, while the sum is 22.

The square root of 30152173 is about 5491.0994345395. The cubic root of 30152173 is about 311.2477391061.

Adding to 30152173 its reverse (37125103), we get a palindrome (67277276).

The spelling of 30152173 in words is "thirty million, one hundred fifty-two thousand, one hundred seventy-three".