171601427 has 2 divisors, whose sum is σ = 171601428. Its totient is φ = 171601426.

The previous prime is 171601387. The next prime is 171601453. The reversal of 171601427 is 724106171.

171601427 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-171601427 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 171601427.

It is not a weakly prime, because it can be changed into another prime (171601487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 85800713 + 85800714.

It is an arithmetic number, because the mean of its divisors is an integer number (85800714).

Almost surely, 2^171601427 is an apocalyptic number.

171601427 is a deficient number, since it is larger than the sum of its proper divisors (1).

171601427 is an equidigital number, since it uses as much as digits as its factorization.

171601427 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2352, while the sum is 29.

The square root of 171601427 is about 13099.6727821728. The cubic root of 171601427 is about 555.6998740370.

Adding to 171601427 its reverse (724106171), we get a palindrome (895707598).

The spelling of 171601427 in words is "one hundred seventy-one million, six hundred one thousand, four hundred twenty-seven".