43574945 has 4 divisors (see below), whose sum is σ = 52289940. Its totient is φ = 34859952.

The previous prime is 43574939. The next prime is 43574959. The reversal of 43574945 is 54947534.

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

It can be written as a sum of positive squares in 2 ways, for example, as 10764961 + 32809984 = 3281^2 + 5728^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-43574945 is a prime.

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, 4357490 + ... + 4357499.

It is an arithmetic number, because the mean of its divisors is an integer number (13072485).

Almost surely, 2^43574945 is an apocalyptic number.

It is an amenable number.

43574945 is a deficient number, since it is larger than the sum of its proper divisors (8714995).

43574945 is an equidigital number, since it uses as much as digits as its factorization.

43574945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8714994.

The product of its digits is 302400, while the sum is 41.

The square root of 43574945 is about 6601.1320998750. The cubic root of 43574945 is about 351.8943408126.

The spelling of 43574945 in words is "forty-three million, five hundred seventy-four thousand, nine hundred forty-five".