65518043 has 2 divisors, whose sum is σ = 65518044. Its totient is φ = 65518042.

The previous prime is 65518003. The next prime is 65518091. The reversal of 65518043 is 34081556.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 65518043 - 2¹⁰ = 65517019 is a prime.

It is a super-2 number, since 2×65518043² = 8585227917099698, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (65518003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32759021 + 32759022.

It is an arithmetic number, because the mean of its divisors is an integer number (32759022).

Almost surely, 2^65518043 is an apocalyptic number.

65518043 is a deficient number, since it is larger than the sum of its proper divisors (1).

65518043 is an equidigital number, since it uses as much as digits as its factorization.

65518043 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14400, while the sum is 32.

The square root of 65518043 is about 8094.3216516271. The cubic root of 65518043 is about 403.1379090312.

Adding to 65518043 its reverse (34081556), we get a palindrome (99599599).

The spelling of 65518043 in words is "sixty-five million, five hundred eighteen thousand, forty-three".