253885171 has 4 divisors (see below), whose sum is σ = 255502432. Its totient is φ = 252267912.

The previous prime is 253885139. The next prime is 253885183. The reversal of 253885171 is 171588352.

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

It is a cyclic number.

It is not a de Polignac number, because 253885171 - 2⁵ = 253885139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (253883171) 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, 808395 + ... + 808708.

It is an arithmetic number, because the mean of its divisors is an integer number (63875608).

Almost surely, 2^253885171 is an apocalyptic number.

253885171 is a deficient number, since it is larger than the sum of its proper divisors (1617261).

253885171 is a wasteful number, since it uses less digits than its factorization.

253885171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1617260.

The product of its digits is 67200, while the sum is 40.

The square root of 253885171 is about 15933.7745371271. The cubic root of 253885171 is about 633.2071037133.

The spelling of 253885171 in words is "two hundred fifty-three million, eight hundred eighty-five thousand, one hundred seventy-one".