43255545 has 16 divisors (see below), whose sum is σ = 69740352. Its totient is φ = 22892480.

The previous prime is 43255519. The next prime is 43255547. The reversal of 43255545 is 54555234.

It is not a de Polignac number, because 43255545 - 2⁷ = 43255417 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (43255547) 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, 9042 + ... + 12971.

It is an arithmetic number, because the mean of its divisors is an integer number (4358772).

Almost surely, 2^43255545 is an apocalyptic number.

It is an amenable number.

43255545 is a deficient number, since it is larger than the sum of its proper divisors (26484807).

43255545 is a wasteful number, since it uses less digits than its factorization.

43255545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22152.

The product of its digits is 60000, while the sum is 33.

The square root of 43255545 is about 6576.8947840147. The cubic root of 43255545 is about 351.0324480356.

It can be divided in two parts, 4325 and 5545, that added together give a triangular number (9870 = T₁₄₀).

The spelling of 43255545 in words is "forty-three million, two hundred fifty-five thousand, five hundred forty-five".