65541143 has 2 divisors, whose sum is σ = 65541144. Its totient is φ = 65541142.

The previous prime is 65541139. The next prime is 65541149. The reversal of 65541143 is 34114556.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 65541143 - 2² = 65541139 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65541149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32770571 + 32770572.

It is an arithmetic number, because the mean of its divisors is an integer number (32770572).

Almost surely, 2^65541143 is an apocalyptic number.

65541143 is a deficient number, since it is larger than the sum of its proper divisors (1).

65541143 is an equidigital number, since it uses as much as digits as its factorization.

65541143 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7200, while the sum is 29.

The square root of 65541143 is about 8095.7484521198. The cubic root of 65541143 is about 403.1852821976.

Adding to 65541143 its reverse (34114556), we get a palindrome (99655699).

The spelling of 65541143 in words is "sixty-five million, five hundred forty-one thousand, one hundred forty-three".