161475 has 12 divisors (see below), whose sum is σ = 267096. Its totient is φ = 86080.

The previous prime is 161471. The next prime is 161503. The reversal of 161475 is 574161.

It is not a de Polignac number, because 161475 - 2² = 161471 is a prime.

It is a Smith number, since the sum of its digits (24) coincides with the sum of the digits of its prime factors.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 161475.

It is not an unprimeable number, because it can be changed into a prime (161471) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1002 + ... + 1151.

It is an arithmetic number, because the mean of its divisors is an integer number (22258).

2¹⁶¹⁴⁷⁵ is an apocalyptic number.

161475 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

161475 is a deficient number, since it is larger than the sum of its proper divisors (105621).

161475 is a wasteful number, since it uses less digits than its factorization.

161475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2166 (or 2161 counting only the distinct ones).

The product of its digits is 840, while the sum is 24.

The square root of 161475 is about 401.8395202068. The cubic root of 161475 is about 54.4546658891.

Subtracting 161475 from its reverse (574161), we obtain a triangular number (412686 = T₉₀₈).

It can be divided in two parts, 161 and 475, that added together give a palindrome (636).

The spelling of 161475 in words is "one hundred sixty-one thousand, four hundred seventy-five".