65553143 has 2 divisors, whose sum is σ = 65553144. Its totient is φ = 65553142.

The previous prime is 65553133. The next prime is 65553149. The reversal of 65553143 is 34135556.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 65553143 - 2¹⁶ = 65487607 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65553149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32776571 + 32776572.

It is an arithmetic number, because the mean of its divisors is an integer number (32776572).

Almost surely, 2^65553143 is an apocalyptic number.

65553143 is a deficient number, since it is larger than the sum of its proper divisors (1).

65553143 is an equidigital number, since it uses as much as digits as its factorization.

65553143 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 27000, while the sum is 32.

The square root of 65553143 is about 8096.4895479461. The cubic root of 65553143 is about 403.2098872417.

Adding to 65553143 its reverse (34135556), we get a palindrome (99688699).

The spelling of 65553143 in words is "sixty-five million, five hundred fifty-three thousand, one hundred forty-three".