169045 has 4 divisors (see below), whose sum is σ = 202860. Its totient is φ = 135232.

The previous prime is 169019. The next prime is 169049. The reversal of 169045 is 540961.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 77841 + 91204 = 279^2 + 302^2 .

It is a cyclic number.

It is not a de Polignac number, because 169045 - 2⁹ = 168533 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (169049) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16900 + ... + 16909.

It is an arithmetic number, because the mean of its divisors is an integer number (50715).

2¹⁶⁹⁰⁴⁵ is an apocalyptic number.

It is an amenable number.

169045 is a deficient number, since it is larger than the sum of its proper divisors (33815).

169045 is an equidigital number, since it uses as much as digits as its factorization.

169045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33814.

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 169045 is about 411.1508239077. The cubic root of 169045 is about 55.2926548979.

The spelling of 169045 in words is "one hundred sixty-nine thousand, forty-five".