162086021 has 2 divisors, whose sum is σ = 162086022. Its totient is φ = 162086020.

The previous prime is 162086009. The next prime is 162086027. The reversal of 162086021 is 120680261.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 153412996 + 8673025 = 12386^2 + 2945^2 .

It is a cyclic number.

It is not a de Polignac number, because 162086021 - 2¹⁰ = 162084997 is a prime.

It is a super-2 number, since 2×162086021² = 52543756407224882, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (162086027) 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, 81043010 + 81043011.

It is an arithmetic number, because the mean of its divisors is an integer number (81043011).

Almost surely, 2^162086021 is an apocalyptic number.

It is an amenable number.

162086021 is a deficient number, since it is larger than the sum of its proper divisors (1).

162086021 is an equidigital number, since it uses as much as digits as its factorization.

162086021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 162086021 is about 12731.3008369137. The cubic root of 162086021 is about 545.2326487583.

The spelling of 162086021 in words is "one hundred sixty-two million, eighty-six thousand, twenty-one".