41569945 has 4 divisors (see below), whose sum is σ = 49883940. Its totient is φ = 33255952.

The previous prime is 41569943. The next prime is 41569991. The reversal of 41569945 is 54996514.

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 10478169 + 31091776 = 3237^2 + 5576^2 .

It is a cyclic number.

It is not a de Polignac number, because 41569945 - 2¹ = 41569943 is a prime.

It is not an unprimeable number, because it can be changed into a prime (41569943) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4156990 + ... + 4156999.

It is an arithmetic number, because the mean of its divisors is an integer number (12470985).

Almost surely, 2^41569945 is an apocalyptic number.

It is an amenable number.

41569945 is a deficient number, since it is larger than the sum of its proper divisors (8313995).

41569945 is an equidigital number, since it uses as much as digits as its factorization.

41569945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8313994.

The product of its digits is 194400, while the sum is 43.

The square root of 41569945 is about 6447.4758626923. The cubic root of 41569945 is about 346.4121771086.

The spelling of 41569945 in words is "forty-one million, five hundred sixty-nine thousand, nine hundred forty-five".