65543801 has 2 divisors, whose sum is σ = 65543802. Its totient is φ = 65543800.

The previous prime is 65543747. The next prime is 65543809. The reversal of 65543801 is 10834556.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 48930025 + 16613776 = 6995^2 + 4076^2 .

It is a cyclic number.

It is not a de Polignac number, because 65543801 - 2¹⁴ = 65527417 is a prime.

It is not a weakly prime, because it can be changed into another prime (65543809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32771900 + 32771901.

It is an arithmetic number, because the mean of its divisors is an integer number (32771901).

Almost surely, 2^65543801 is an apocalyptic number.

It is an amenable number.

65543801 is a deficient number, since it is larger than the sum of its proper divisors (1).

65543801 is an equidigital number, since it uses as much as digits as its factorization.

65543801 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 65543801 is about 8095.9126106944. The cubic root of 65543801 is about 403.1907324738.

The spelling of 65543801 in words is "sixty-five million, five hundred forty-three thousand, eight hundred one".