61040543 has 2 divisors, whose sum is σ = 61040544. Its totient is φ = 61040542.

The previous prime is 61040537. The next prime is 61040587. The reversal of 61040543 is 34504016.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61040543 - 2⁶ = 61040479 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61040533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30520271 + 30520272.

It is an arithmetic number, because the mean of its divisors is an integer number (30520272).

Almost surely, 2^61040543 is an apocalyptic number.

61040543 is a deficient number, since it is larger than the sum of its proper divisors (1).

61040543 is an equidigital number, since it uses as much as digits as its factorization.

61040543 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 61040543 is about 7812.8447443937. The cubic root of 61040543 is about 393.7369106928.

Adding to 61040543 its reverse (34504016), we get a palindrome (95544559).

The spelling of 61040543 in words is "sixty-one million, forty thousand, five hundred forty-three".