171020079 has 10 divisors (see below), whose sum is σ = 255474560. Its totient is φ = 114013332.

The previous prime is 171020071. The next prime is 171020081. The reversal of 171020079 is 970020171.

It is not a de Polignac number, because 171020079 - 2³ = 171020071 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (171020071) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 1055599 + ... + 1055760.

It is an arithmetic number, because the mean of its divisors is an integer number (25547456).

Almost surely, 2^171020079 is an apocalyptic number.

171020079 is a deficient number, since it is larger than the sum of its proper divisors (84454481).

171020079 is an equidigital number, since it uses as much as digits as its factorization.

171020079 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2111371 (or 2111362 counting only the distinct ones).

The product of its (nonzero) digits is 882, while the sum is 27.

The square root of 171020079 is about 13077.4645478395. The cubic root of 171020079 is about 555.0716342891.

The spelling of 171020079 in words is "one hundred seventy-one million, twenty thousand, seventy-nine".