161652 has 24 divisors (see below), whose sum is σ = 397600. Its totient is φ = 50976.

The previous prime is 161641. The next prime is 161659. The reversal of 161652 is 256161.

It is a happy number.

161652 is nontrivially palindromic in base 5.

It is a super-2 number, since 2×161652² = 52262738208, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161659) 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 7 ways as a sum of consecutive naturals, for example, 127 + ... + 582.

2¹⁶¹⁶⁵² is an apocalyptic number.

161652 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

161652 is an abundant number, since it is smaller than the sum of its proper divisors (235948).

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

161652 is a wasteful number, since it uses less digits than its factorization.

161652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 735 (or 733 counting only the distinct ones).

The product of its digits is 360, while the sum is 21.

The square root of 161652 is about 402.0596970600. The cubic root of 161652 is about 54.4745553586.

The spelling of 161652 in words is "one hundred sixty-one thousand, six hundred fifty-two".