40061543 has 2 divisors, whose sum is σ = 40061544. Its totient is φ = 40061542.

The previous prime is 40061521. The next prime is 40061563. The reversal of 40061543 is 34516004.

It is a happy number.

40061543 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40061543 - 2⁶ = 40061479 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40061513) 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 as a sum of consecutive naturals, namely, 20030771 + 20030772.

It is an arithmetic number, because the mean of its divisors is an integer number (20030772).

Almost surely, 2^40061543 is an apocalyptic number.

40061543 is a deficient number, since it is larger than the sum of its proper divisors (1).

40061543 is an equidigital number, since it uses as much as digits as its factorization.

40061543 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 40061543 is about 6329.4188516798. The cubic root of 40061543 is about 342.1704945421.

Adding to 40061543 its reverse (34516004), we get a palindrome (74577547).

It can be divided in two parts, 40061 and 543, that added together give a palindrome (40604).

The spelling of 40061543 in words is "forty million, sixty-one thousand, five hundred forty-three".