171033397 has 2 divisors, whose sum is σ = 171033398. Its totient is φ = 171033396.

The previous prime is 171033367. The next prime is 171033431. The reversal of 171033397 is 793330171.

It is a happy number.

It is an a-pointer prime, because the next prime (171033431) can be obtained adding 171033397 to its sum of digits (34).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 133957476 + 37075921 = 11574^2 + 6089^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-171033397 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (171033367) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 85516698 + 85516699.

It is an arithmetic number, because the mean of its divisors is an integer number (85516699).

Almost surely, 2^171033397 is an apocalyptic number.

It is an amenable number.

171033397 is a deficient number, since it is larger than the sum of its proper divisors (1).

171033397 is an equidigital number, since it uses as much as digits as its factorization.

171033397 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11907, while the sum is 34.

The square root of 171033397 is about 13077.9737344896. The cubic root of 171033397 is about 555.0860424455.

The spelling of 171033397 in words is "one hundred seventy-one million, thirty-three thousand, three hundred ninety-seven".