45169 has 4 divisors (see below), whose sum is σ = 47844. Its totient is φ = 42496.
The previous prime is 45161. The next prime is 45179. The reversal of 45169 is 96154.
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 32400 + 12769 = 180^2 + 113^2 .
It is a cyclic number.
It is not a de Polignac number, because 45169 - 23 = 45161 is a prime.
It is a super-2 number, since 2×451692 = 4080477122, which contains 22 as substring.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (45161) 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, 1312 + ... + 1345.
It is an arithmetic number, because the mean of its divisors is an integer number (11961).
245169 is an apocalyptic number.
It is an amenable number.
45169 is a deficient number, since it is larger than the sum of its proper divisors (2675).
45169 is a wasteful number, since it uses less digits than its factorization.
45169 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 2674.
The product of its digits is 1080, while the sum is 25.
The square root of 45169 is about 212.5299978827. The cubic root of 45169 is about 35.6134044544.
The spelling of 45169 in words is "forty-five thousand, one hundred sixty-nine".
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