170516161 has 2 divisors, whose sum is σ = 170516162. Its totient is φ = 170516160.

The previous prime is 170516153. The next prime is 170516183. The reversal of 170516161 is 161615071.

170516161 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 163328400 + 7187761 = 12780^2 + 2681^2 .

It is a cyclic number.

It is not a de Polignac number, because 170516161 - 2³ = 170516153 is a prime.

It is a super-2 number, since 2×170516161² = 58151522324355842, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (170516261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 85258080 + 85258081.

It is an arithmetic number, because the mean of its divisors is an integer number (85258081).

Almost surely, 2^170516161 is an apocalyptic number.

It is an amenable number.

170516161 is a deficient number, since it is larger than the sum of its proper divisors (1).

170516161 is an equidigital number, since it uses as much as digits as its factorization.

170516161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1260, while the sum is 28.

The square root of 170516161 is about 13058.1836792105. The cubic root of 170516161 is about 554.5259171498.

The spelling of 170516161 in words is "one hundred seventy million, five hundred sixteen thousand, one hundred sixty-one".