43522945 has 4 divisors (see below), whose sum is σ = 52227540. Its totient is φ = 34818352.

The previous prime is 43522933. The next prime is 43522957. The reversal of 43522945 is 54922534.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (43522933) and next prime (43522957).

It can be written as a sum of positive squares in 2 ways, for example, as 18352656 + 25170289 = 4284^2 + 5017^2 .

It is a cyclic number.

It is not a de Polignac number, because 43522945 - 2⁹ = 43522433 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 43522945.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4352290 + ... + 4352299.

It is an arithmetic number, because the mean of its divisors is an integer number (13056885).

Almost surely, 2^43522945 is an apocalyptic number.

It is an amenable number.

43522945 is a deficient number, since it is larger than the sum of its proper divisors (8704595).

43522945 is an equidigital number, since it uses as much as digits as its factorization.

43522945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8704594.

The product of its digits is 43200, while the sum is 34.

The square root of 43522945 is about 6597.1922057797. The cubic root of 43522945 is about 351.7543078237.

The spelling of 43522945 in words is "forty-three million, five hundred twenty-two thousand, nine hundred forty-five".