40305541 has 4 divisors (see below), whose sum is σ = 40514572. Its totient is φ = 40096512.

The previous prime is 40305523. The next prime is 40305553. The reversal of 40305541 is 14550304.

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 4950625 + 35354916 = 2225^2 + 5946^2 .

It is a cyclic number.

It is not a de Polignac number, because 40305541 - 2¹⁵ = 40272773 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40305571) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 104226 + ... + 104611.

It is an arithmetic number, because the mean of its divisors is an integer number (10128643).

Almost surely, 2^40305541 is an apocalyptic number.

It is an amenable number.

40305541 is a deficient number, since it is larger than the sum of its proper divisors (209031).

40305541 is a wasteful number, since it uses less digits than its factorization.

40305541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209030.

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 40305541 is about 6348.6645052326. The cubic root of 40305541 is about 342.8637611404.

Adding to 40305541 its reverse (14550304), we get a palindrome (54855845).

The spelling of 40305541 in words is "forty million, three hundred five thousand, five hundred forty-one".