161552 has 20 divisors (see below), whose sum is σ = 327360. Its totient is φ = 77088.

The previous prime is 161543. The next prime is 161561. The reversal of 161552 is 255161.

It is an interprime number because it is at equal distance from previous prime (161543) and next prime (161561).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 149 + ... + 587.

It is an arithmetic number, because the mean of its divisors is an integer number (16368).

2¹⁶¹⁵⁵² is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 161552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (163680).

161552 is an abundant number, since it is smaller than the sum of its proper divisors (165808).

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

161552 is a wasteful number, since it uses less digits than its factorization.

161552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 470 (or 464 counting only the distinct ones).

The product of its digits is 300, while the sum is 20.

The square root of 161552 is about 401.9353181794. The cubic root of 161552 is about 54.4633201554.

The spelling of 161552 in words is "one hundred sixty-one thousand, five hundred fifty-two".