161224 has 16 divisors (see below), whose sum is σ = 345600. Its totient is φ = 69072.

The previous prime is 161221. The next prime is 161233. The reversal of 161224 is 422161.

161224 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 161198 and 161207.

It is not an unprimeable number, because it can be changed into a prime (161221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1384 + ... + 1495.

It is an arithmetic number, because the mean of its divisors is an integer number (21600).

2¹⁶¹²²⁴ is an apocalyptic number.

161224 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

161224 is an abundant number, since it is smaller than the sum of its proper divisors (184376).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

161224 is a wasteful number, since it uses less digits than its factorization.

161224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2892 (or 2888 counting only the distinct ones).

The product of its digits is 96, while the sum is 16.

The square root of 161224 is about 401.5270850142. The cubic root of 161224 is about 54.4264361130.

Adding to 161224 its reverse (422161), we get a palindrome (583385).

The spelling of 161224 in words is "one hundred sixty-one thousand, two hundred twenty-four".