161275 has 6 divisors (see below), whose sum is σ = 200012. Its totient is φ = 129000.

The previous prime is 161267. The next prime is 161281. The reversal of 161275 is 572161.

It is not a de Polignac number, because 161275 - 2³ = 161267 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3201 + ... + 3250.

2¹⁶¹²⁷⁵ is an apocalyptic number.

161275 is a deficient number, since it is larger than the sum of its proper divisors (38737).

161275 is an equidigital number, since it uses as much as digits as its factorization.

161275 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6461 (or 6456 counting only the distinct ones).

The product of its digits is 420, while the sum is 22.

The square root of 161275 is about 401.5905875391. The cubic root of 161275 is about 54.4321744142.

The spelling of 161275 in words is "one hundred sixty-one thousand, two hundred seventy-five".