43265 has 8 divisors (see below), whose sum is σ = 55080. Its totient is φ = 32512.

The previous prime is 43261. The next prime is 43271. The reversal of 43265 is 56234.

It is a Cunningham number, because it is equal to 208²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 15376 + 27889 = 124^2 + 167^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 43265 - 2² = 43261 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (43261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 170 + ... + 339.

It is an arithmetic number, because the mean of its divisors is an integer number (6885).

It is a Proth number, since it is equal to 169 ⋅ 2⁸ + 1 and 169 < 2⁸.

2⁴³²⁶⁵ is an apocalyptic number.

43265 is the 170-th pentagonal number.

It is an amenable number.

43265 is a deficient number, since it is larger than the sum of its proper divisors (11815).

43265 is a wasteful number, since it uses less digits than its factorization.

43265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 531.

The product of its digits is 720, while the sum is 20.

The square root of 43265 is about 208.0024038323. The cubic root of 43265 is about 35.1058022945.

Adding to 43265 its reverse (56234), we get a palindrome (99499).

The spelling of 43265 in words is "forty-three thousand, two hundred sixty-five".