161733 has 24 divisors (see below), whose sum is σ = 263520. Its totient is φ = 87360.

The previous prime is 161731. The next prime is 161741. The reversal of 161733 is 337161.

It is not a de Polignac number, because 161733 - 2¹ = 161731 is a prime.

It is a Curzon number.

161733 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161731) 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 23 ways as a sum of consecutive naturals, for example, 5563 + ... + 5591.

It is an arithmetic number, because the mean of its divisors is an integer number (10980).

2¹⁶¹⁷³³ is an apocalyptic number.

161733 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

161733 is a deficient number, since it is larger than the sum of its proper divisors (101787).

161733 is a wasteful number, since it uses less digits than its factorization.

161733 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69 (or 56 counting only the distinct ones).

The product of its digits is 378, while the sum is 21.

The square root of 161733 is about 402.1604157547. The cubic root of 161733 is about 54.4836524771.

Adding to 161733 its reverse (337161), we get a palindrome (498894).

It can be divided in two parts, 1617 and 33, that multiplied together give a square (53361 = 231²).

The spelling of 161733 in words is "one hundred sixty-one thousand, seven hundred thirty-three".