43540213 has 8 divisors (see below), whose sum is σ = 47589120. Its totient is φ = 39656640.

The previous prime is 43540187. The next prime is 43540243. The reversal of 43540213 is 31204534.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-43540213 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43540243) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40783 + ... + 41836.

It is an arithmetic number, because the mean of its divisors is an integer number (5948640).

Almost surely, 2^43540213 is an apocalyptic number.

It is an amenable number.

43540213 is a deficient number, since it is larger than the sum of its proper divisors (4048907).

43540213 is a wasteful number, since it uses less digits than its factorization.

43540213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82667.

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 43540213 is about 6598.5008145790. The cubic root of 43540213 is about 351.8008219115.

Adding to 43540213 its reverse (31204534), we get a palindrome (74744747).

The spelling of 43540213 in words is "forty-three million, five hundred forty thousand, two hundred thirteen".