40315543 has 2 divisors, whose sum is σ = 40315544. Its totient is φ = 40315542.

The previous prime is 40315537. The next prime is 40315579. The reversal of 40315543 is 34551304.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40315543 - 2¹⁷ = 40184471 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40315523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20157771 + 20157772.

It is an arithmetic number, because the mean of its divisors is an integer number (20157772).

Almost surely, 2^40315543 is an apocalyptic number.

40315543 is a deficient number, since it is larger than the sum of its proper divisors (1).

40315543 is an equidigital number, since it uses as much as digits as its factorization.

40315543 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3600, while the sum is 25.

The square root of 40315543 is about 6349.4521810941. The cubic root of 40315543 is about 342.8921198526.

Adding to 40315543 its reverse (34551304), we get a palindrome (74866847).

The spelling of 40315543 in words is "forty million, three hundred fifteen thousand, five hundred forty-three".