162657161 has 2 divisors, whose sum is σ = 162657162. Its totient is φ = 162657160.

The previous prime is 162657151. The next prime is 162657179. The reversal of 162657161 is 161756261.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 156625225 + 6031936 = 12515^2 + 2456^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-162657161 is a prime.

It is a super-3 number, since 3×162657161³ (a number of 26 digits) contains 333 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (162657101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81328580 + 81328581.

It is an arithmetic number, because the mean of its divisors is an integer number (81328581).

Almost surely, 2^162657161 is an apocalyptic number.

It is an amenable number.

162657161 is a deficient number, since it is larger than the sum of its proper divisors (1).

162657161 is an equidigital number, since it uses as much as digits as its factorization.

162657161 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15120, while the sum is 35.

The square root of 162657161 is about 12753.7116558279. The cubic root of 162657161 is about 545.8723073052.

The spelling of 162657161 in words is "one hundred sixty-two million, six hundred fifty-seven thousand, one hundred sixty-one".