245169 has 6 divisors (see below), whose sum is σ = 354146. Its totient is φ = 163440.

The previous prime is 245149. The next prime is 245171. The reversal of 245169 is 961542.

It can be written as a sum of positive squares in only one way, i.e., 245025 + 144 = 495^2 + 12^2 .

It is not a de Polignac number, because 245169 - 2¹¹ = 243121 is a prime.

It is a super-2 number, since 2×245169² = 120215677122, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

245169 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245129) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 13612 + ... + 13629.

2²⁴⁵¹⁶⁹ is an apocalyptic number.

It is an amenable number.

245169 is a deficient number, since it is larger than the sum of its proper divisors (108977).

245169 is a wasteful number, since it uses less digits than its factorization.

245169 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27247 (or 27244 counting only the distinct ones).

The product of its digits is 2160, while the sum is 27.

The square root of 245169 is about 495.1454331810. The cubic root of 245169 is about 62.5876317401.

It can be divided in two parts, 245 and 169, that added together give a palindrome (414).

The spelling of 245169 in words is "two hundred forty-five thousand, one hundred sixty-nine".