161595 has 48 divisors (see below), whose sum is σ = 349440. Its totient is φ = 69984.

The previous prime is 161591. The next prime is 161599. The reversal of 161595 is 595161.

It is an interprime number because it is at equal distance from previous prime (161591) and next prime (161599).

It is not a de Polignac number, because 161595 - 2² = 161591 is a prime.

It is a super-2 number, since 2×161595² = 52225888050, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161591) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 8496 + ... + 8514.

It is an arithmetic number, because the mean of its divisors is an integer number (7280).

2¹⁶¹⁵⁹⁵ is an apocalyptic number.

161595 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

161595 is an abundant number, since it is smaller than the sum of its proper divisors (187845).

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

161595 is an equidigital number, since it uses as much as digits as its factorization.

161595 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46 (or 34 counting only the distinct ones).

The product of its digits is 1350, while the sum is 27.

The square root of 161595 is about 401.9888058143. The cubic root of 161595 is about 54.4681518608.

The spelling of 161595 in words is "one hundred sixty-one thousand, five hundred ninety-five".