171256427 has 8 divisors (see below), whose sum is σ = 172509456. Its totient is φ = 170007552.

The previous prime is 171256417. The next prime is 171256441. The reversal of 171256427 is 724652171.

171256427 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 171256427 - 2⁶ = 171256363 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (171256417) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 180368 + ... + 181314.

It is an arithmetic number, because the mean of its divisors is an integer number (21563682).

Almost surely, 2^171256427 is an apocalyptic number.

171256427 is a deficient number, since it is larger than the sum of its proper divisors (1253029).

171256427 is an equidigital number, since it uses as much as digits as its factorization.

171256427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2077.

The product of its digits is 23520, while the sum is 35.

The square root of 171256427 is about 13086.4978890458. The cubic root of 171256427 is about 555.3272176945.

The spelling of 171256427 in words is "one hundred seventy-one million, two hundred fifty-six thousand, four hundred twenty-seven".