43545455 has 16 divisors (see below), whose sum is σ = 53717664. Its totient is φ = 33868800.

The previous prime is 43545407. The next prime is 43545457. The reversal of 43545455 is 55454534.

It is not a de Polignac number, because 43545455 - 2⁸ = 43545199 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43545457) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 72155 + ... + 72755.

It is an arithmetic number, because the mean of its divisors is an integer number (3357354).

Almost surely, 2^43545455 is an apocalyptic number.

43545455 is a deficient number, since it is larger than the sum of its proper divisors (10172209).

43545455 is a wasteful number, since it uses less digits than its factorization.

43545455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 986.

The product of its digits is 120000, while the sum is 35.

The square root of 43545455 is about 6598.8980140627. The cubic root of 43545455 is about 351.8149396338.

Adding to 43545455 its reverse (55454534), we get a palindrome (98999989).

The spelling of 43545455 in words is "forty-three million, five hundred forty-five thousand, four hundred fifty-five".