162855089 has 2 divisors, whose sum is σ = 162855090. Its totient is φ = 162855088.

The previous prime is 162855083. The next prime is 162855109. The reversal of 162855089 is 980558261.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 95746225 + 67108864 = 9785^2 + 8192^2 .

It is an emirp because it is prime and its reverse (980558261) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-162855089 is a prime.

It is not a weakly prime, because it can be changed into another prime (162855083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81427544 + 81427545.

It is an arithmetic number, because the mean of its divisors is an integer number (81427545).

Almost surely, 2^162855089 is an apocalyptic number.

It is an amenable number.

162855089 is a deficient number, since it is larger than the sum of its proper divisors (1).

162855089 is an equidigital number, since it uses as much as digits as its factorization.

162855089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 172800, while the sum is 44.

The square root of 162855089 is about 12761.4689201518. The cubic root of 162855089 is about 546.0936309348.

The spelling of 162855089 in words is "one hundred sixty-two million, eight hundred fifty-five thousand, eighty-nine".