65444201 has 2 divisors, whose sum is σ = 65444202. Its totient is φ = 65444200.

The previous prime is 65444173. The next prime is 65444233. The reversal of 65444201 is 10244456.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 59660176 + 5784025 = 7724^2 + 2405^2 .

It is a cyclic number.

It is not a de Polignac number, because 65444201 - 2¹⁰ = 65443177 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (65444261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32722100 + 32722101.

It is an arithmetic number, because the mean of its divisors is an integer number (32722101).

Almost surely, 2^65444201 is an apocalyptic number.

It is an amenable number.

65444201 is a deficient number, since it is larger than the sum of its proper divisors (1).

65444201 is an equidigital number, since it uses as much as digits as its factorization.

65444201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3840, while the sum is 26.

The square root of 65444201 is about 8089.7590198967. The cubic root of 65444201 is about 402.9864001305.

Adding to 65444201 its reverse (10244456), we get a palindrome (75688657).

The spelling of 65444201 in words is "sixty-five million, four hundred forty-four thousand, two hundred one".