43535 has 4 divisors (see below), whose sum is σ = 52248. Its totient is φ = 34824.

The previous prime is 43517. The next prime is 43541. The reversal of 43535 is 53534.

43535 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 43535 - 2¹² = 39439 is a prime.

It is a Duffinian number.

It is a zygodrome in base 4.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4349 + ... + 4358.

It is an arithmetic number, because the mean of its divisors is an integer number (13062).

2⁴³⁵³⁵ is an apocalyptic number.

43535 is a deficient number, since it is larger than the sum of its proper divisors (8713).

43535 is an equidigital number, since it uses as much as digits as its factorization.

43535 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8712.

The product of its digits is 900, while the sum is 20.

The square root of 43535 is about 208.6504253530. The cubic root of 43535 is about 35.1786781168.

Subtracting 43535 from its reverse (53534), we obtain a palindrome (9999).

It can be divided in two parts, 435 and 35, that multiplied together give a triangular number (15225 = T₁₇₄).

The spelling of 43535 in words is "forty-three thousand, five hundred thirty-five".