5065661 has 2 divisors, whose sum is σ = 5065662. Its totient is φ = 5065660.

The previous prime is 5065651. The next prime is 5065663. The reversal of 5065661 is 1665605.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2785561 + 2280100 = 1669^2 + 1510^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5065661 is a prime.

It is a Sophie Germain prime.

Together with 5065663, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5065663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2532830 + 2532831.

It is an arithmetic number, because the mean of its divisors is an integer number (2532831).

Almost surely, 2^5065661 is an apocalyptic number.

It is an amenable number.

5065661 is a deficient number, since it is larger than the sum of its proper divisors (1).

5065661 is an equidigital number, since it uses as much as digits as its factorization.

5065661 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5400, while the sum is 29.

The square root of 5065661 is about 2250.7023348280. The cubic root of 5065661 is about 171.7428666434.

The spelling of 5065661 in words is "five million, sixty-five thousand, six hundred sixty-one".