253928171 has 4 divisors (see below), whose sum is σ = 290203632. Its totient is φ = 217652712.

The previous prime is 253928159. The next prime is 253928203. The reversal of 253928171 is 171829352.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-253928171 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (253928071) 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, 18137720 + ... + 18137733.

It is an arithmetic number, because the mean of its divisors is an integer number (72550908).

Almost surely, 2^253928171 is an apocalyptic number.

253928171 is a deficient number, since it is larger than the sum of its proper divisors (36275461).

253928171 is an equidigital number, since it uses as much as digits as its factorization.

253928171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36275460.

The product of its digits is 30240, while the sum is 38.

The square root of 253928171 is about 15935.1238150194. The cubic root of 253928171 is about 633.2428500159.

It can be divided in two parts, 2539281 and 71, that added together give a palindrome (2539352).

The spelling of 253928171 in words is "two hundred fifty-three million, nine hundred twenty-eight thousand, one hundred seventy-one".