162191 has 4 divisors (see below), whose sum is σ = 165000. Its totient is φ = 159384.

The previous prime is 162143. The next prime is 162209. The reversal of 162191 is 191261.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 162191 - 2¹⁰ = 161167 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (162091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1316 + ... + 1433.

It is an arithmetic number, because the mean of its divisors is an integer number (41250).

2¹⁶²¹⁹¹ is an apocalyptic number.

162191 is a deficient number, since it is larger than the sum of its proper divisors (2809).

162191 is an equidigital number, since it uses as much as digits as its factorization.

162191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2808.

The product of its digits is 108, while the sum is 20.

The square root of 162191 is about 402.7294377122. The cubic root of 162191 is about 54.5350334469.

It can be divided in two parts, 162 and 191, that added together give a palindrome (353).

The spelling of 162191 in words is "one hundred sixty-two thousand, one hundred ninety-one".