171130447 has 4 divisors (see below), whose sum is σ = 176650816. Its totient is φ = 165610080.

The previous prime is 171130429. The next prime is 171130451. The reversal of 171130447 is 744031171.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 744031171 = 13 ⋅57233167.

It is a cyclic number.

It is not a de Polignac number, because 171130447 - 2⁷ = 171130319 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 (171130417) 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, 2760138 + ... + 2760199.

It is an arithmetic number, because the mean of its divisors is an integer number (44162704).

Almost surely, 2^171130447 is an apocalyptic number.

171130447 is a deficient number, since it is larger than the sum of its proper divisors (5520369).

171130447 is an equidigital number, since it uses as much as digits as its factorization.

171130447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5520368.

The product of its (nonzero) digits is 2352, while the sum is 28.

The square root of 171130447 is about 13081.6836454640. The cubic root of 171130447 is about 555.1910139797.

The spelling of 171130447 in words is "one hundred seventy-one million, one hundred thirty thousand, four hundred forty-seven".