43545340 has 24 divisors (see below), whose sum is σ = 96258960. Its totient is φ = 16501248.

The previous prime is 43545323. The next prime is 43545343. The reversal of 43545340 is 4354534.

It is a junction number, because it is equal to n+sod(n) for n = 43545299 and 43545308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43545343) 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, 56917 + ... + 57676.

It is an arithmetic number, because the mean of its divisors is an integer number (4010790).

Almost surely, 2^43545340 is an apocalyptic number.

It is an amenable number.

43545340 is an abundant number, since it is smaller than the sum of its proper divisors (52713620).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

43545340 is a wasteful number, since it uses less digits than its factorization.

43545340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114621 (or 114619 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 28.

The square root of 43545340 is about 6598.8893004808. The cubic root of 43545340 is about 351.8146299286.

Adding to 43545340 its reverse (4354534), we get a palindrome (47899874).

The spelling of 43545340 in words is "forty-three million, five hundred forty-five thousand, three hundred forty".