40785541 has 4 divisors (see below), whose sum is σ = 40829292. Its totient is φ = 40741792.

The previous prime is 40785527. The next prime is 40785559. The reversal of 40785541 is 14558704.

40785541 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 30481441 + 10304100 = 5521^2 + 3210^2 .

It is a cyclic number.

It is not a de Polignac number, because 40785541 - 2⁹ = 40785029 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40785497 and 40785506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40785341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20446 + ... + 22351.

It is an arithmetic number, because the mean of its divisors is an integer number (10207323).

Almost surely, 2^40785541 is an apocalyptic number.

It is an amenable number.

40785541 is a deficient number, since it is larger than the sum of its proper divisors (43751).

40785541 is an equidigital number, since it uses as much as digits as its factorization.

40785541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43750.

The product of its (nonzero) digits is 22400, while the sum is 34.

The square root of 40785541 is about 6386.3558466468. The cubic root of 40785541 is about 344.2194522069.

The spelling of 40785541 in words is "forty million, seven hundred eighty-five thousand, five hundred forty-one".