162261 has 18 divisors (see below), whose sum is σ = 259350. Its totient is φ = 97680.

The previous prime is 162257. The next prime is 162263.

It is a happy number.

162261 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in only one way, i.e., 108900 + 53361 = 330^2 + 231^2 .

It is not a de Polignac number, because 162261 - 2² = 162257 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (162263) 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 17 ways as a sum of consecutive naturals, for example, 1015 + ... + 1163.

2¹⁶²²⁶¹ is an apocalyptic number.

162261 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

162261 is a deficient number, since it is larger than the sum of its proper divisors (97089).

162261 is a wasteful number, since it uses less digits than its factorization.

162261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177 (or 163 counting only the distinct ones).

The product of its digits is 144, while the sum is 18.

The square root of 162261 is about 402.8163353192. The cubic root of 162261 is about 54.5428779086.

The spelling of 162261 in words is "one hundred sixty-two thousand, two hundred sixty-one".