171006401 has 2 divisors, whose sum is σ = 171006402. Its totient is φ = 171006400.

The previous prime is 171006377. The next prime is 171006421. The reversal of 171006401 is 104600171.

It is an a-pointer prime, because the next prime (171006421) can be obtained adding 171006401 to its sum of digits (20).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 133171600 + 37834801 = 11540^2 + 6151^2 .

It is a cyclic number.

It is not a de Polignac number, because 171006401 - 2⁶ = 171006337 is a prime.

It is not a weakly prime, because it can be changed into another prime (171006421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 85503200 + 85503201.

It is an arithmetic number, because the mean of its divisors is an integer number (85503201).

Almost surely, 2^171006401 is an apocalyptic number.

It is an amenable number.

171006401 is a deficient number, since it is larger than the sum of its proper divisors (1).

171006401 is an equidigital number, since it uses as much as digits as its factorization.

171006401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 168, while the sum is 20.

The square root of 171006401 is about 13076.9415766837. The cubic root of 171006401 is about 555.0568358860.

Adding to 171006401 its reverse (104600171), we get a palindrome (275606572).

The spelling of 171006401 in words is "one hundred seventy-one million, six thousand, four hundred one".