65506201 has 2 divisors, whose sum is σ = 65506202. Its totient is φ = 65506200.

The previous prime is 65506187. The next prime is 65506229. The reversal of 65506201 is 10260556.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 60466176 + 5040025 = 7776^2 + 2245^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-65506201 is a prime.

It is not a weakly prime, because it can be changed into another prime (65506271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32753100 + 32753101.

It is an arithmetic number, because the mean of its divisors is an integer number (32753101).

Almost surely, 2^65506201 is an apocalyptic number.

It is an amenable number.

65506201 is a deficient number, since it is larger than the sum of its proper divisors (1).

65506201 is an equidigital number, since it uses as much as digits as its factorization.

65506201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 65506201 is about 8093.5901181120. The cubic root of 65506201 is about 403.1136193009.

Adding to 65506201 its reverse (10260556), we get a palindrome (75766757).

The spelling of 65506201 in words is "sixty-five million, five hundred six thousand, two hundred one".