43135541 has 8 divisors (see below), whose sum is σ = 43775640. Its totient is φ = 42499072.

The previous prime is 43135537. The next prime is 43135577. The reversal of 43135541 is 14553134.

It can be written as a sum of positive squares in 4 ways, for example, as 10588516 + 32547025 = 3254^2 + 5705^2 .

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 43135541 - 2² = 43135537 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 43135541.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43135531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30731 + ... + 32103.

It is an arithmetic number, because the mean of its divisors is an integer number (5471955).

Almost surely, 2^43135541 is an apocalyptic number.

It is an amenable number.

43135541 is a deficient number, since it is larger than the sum of its proper divisors (640099).

43135541 is a wasteful number, since it uses less digits than its factorization.

43135541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1815.

The product of its digits is 3600, while the sum is 26.

The square root of 43135541 is about 6567.7652972682. The cubic root of 43135541 is about 350.7075238810.

Adding to 43135541 its reverse (14553134), we get a palindrome (57688675).

The spelling of 43135541 in words is "forty-three million, one hundred thirty-five thousand, five hundred forty-one".