169481 has 4 divisors (see below), whose sum is σ = 182532. Its totient is φ = 156432.

The previous prime is 169471. The next prime is 169483. The reversal of 169481 is 184961.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 184961 = 7 ⋅26423.

It can be written as a sum of positive squares in 2 ways, for example, as 67081 + 102400 = 259^2 + 320^2 .

It is a cyclic number.

It is not a de Polignac number, because 169481 - 2¹⁰ = 168457 is a prime.

It is a super-2 number, since 2×169481² = 57447618722, which contains 22 as substring.

It is a Duffinian number.

169481 is a modest number, since divided by 481 gives 169 as remainder.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 169481.

It is not an unprimeable number, because it can be changed into a prime (169483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6506 + ... + 6531.

It is an arithmetic number, because the mean of its divisors is an integer number (45633).

2¹⁶⁹⁴⁸¹ is an apocalyptic number.

It is an amenable number.

169481 is a deficient number, since it is larger than the sum of its proper divisors (13051).

169481 is a wasteful number, since it uses less digits than its factorization.

169481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13050.

The product of its digits is 1728, while the sum is 29.

The square root of 169481 is about 411.6807015151. The cubic root of 169481 is about 55.3401509317.

The spelling of 169481 in words is "one hundred sixty-nine thousand, four hundred eighty-one".