43540545 has 16 divisors (see below), whose sum is σ = 69757632. Its totient is φ = 23190720.

The previous prime is 43540531. The next prime is 43540559. The reversal of 43540545 is 54504534.

It is an interprime number because it is at equal distance from previous prime (43540531) and next prime (43540559).

It is not a de Polignac number, because 43540545 - 2⁴ = 43540529 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13894 + ... + 16736.

It is an arithmetic number, because the mean of its divisors is an integer number (4359852).

Almost surely, 2^43540545 is an apocalyptic number.

It is an amenable number.

43540545 is a deficient number, since it is larger than the sum of its proper divisors (26217087).

43540545 is a wasteful number, since it uses less digits than its factorization.

43540545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3872.

The product of its (nonzero) digits is 24000, while the sum is 30.

The square root of 43540545 is about 6598.5259717607. The cubic root of 43540545 is about 351.8017160855.

The spelling of 43540545 in words is "forty-three million, five hundred forty thousand, five hundred forty-five".