43540653 has 24 divisors (see below), whose sum is σ = 63379488. Its totient is φ = 26574912.

The previous prime is 43540649. The next prime is 43540661. The reversal of 43540653 is 35604534.

It is not a de Polignac number, because 43540653 - 2² = 43540649 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 43540653.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43540853) 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 23 ways as a sum of consecutive naturals, for example, 79326 + ... + 79872.

It is an arithmetic number, because the mean of its divisors is an integer number (2640812).

Almost surely, 2^43540653 is an apocalyptic number.

It is an amenable number.

43540653 is a deficient number, since it is larger than the sum of its proper divisors (19838835).

43540653 is a wasteful number, since it uses less digits than its factorization.

43540653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 733 (or 720 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 30.

The square root of 43540653 is about 6598.5341554015. The cubic root of 43540653 is about 351.8020069604.

The spelling of 43540653 in words is "forty-three million, five hundred forty thousand, six hundred fifty-three".