40216541 has 2 divisors, whose sum is σ = 40216542. Its totient is φ = 40216540.

The previous prime is 40216529. The next prime is 40216619. The reversal of 40216541 is 14561204.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 38800441 + 1416100 = 6229^2 + 1190^2 .

It is a cyclic number.

It is not a de Polignac number, because 40216541 - 2¹⁴ = 40200157 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40216741) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20108270 + 20108271.

It is an arithmetic number, because the mean of its divisors is an integer number (20108271).

Almost surely, 2^40216541 is an apocalyptic number.

It is an amenable number.

40216541 is a deficient number, since it is larger than the sum of its proper divisors (1).

40216541 is an equidigital number, since it uses as much as digits as its factorization.

40216541 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 40216541 is about 6341.6512833804. The cubic root of 40216541 is about 342.6112122197.

Adding to 40216541 its reverse (14561204), we get a palindrome (54777745).

The spelling of 40216541 in words is "forty million, two hundred sixteen thousand, five hundred forty-one".