5247661 has 2 divisors, whose sum is σ = 5247662. Its totient is φ = 5247660.

The previous prime is 5247659. The next prime is 5247701. The reversal of 5247661 is 1667425.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3822025 + 1425636 = 1955^2 + 1194^2 .

It is a cyclic number.

It is not a de Polignac number, because 5247661 - 2¹ = 5247659 is a prime.

Together with 5247659, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5247461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2623830 + 2623831.

It is an arithmetic number, because the mean of its divisors is an integer number (2623831).

Almost surely, 2^5247661 is an apocalyptic number.

It is an amenable number.

5247661 is a deficient number, since it is larger than the sum of its proper divisors (1).

5247661 is an equidigital number, since it uses as much as digits as its factorization.

5247661 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10080, while the sum is 31.

The square root of 5247661 is about 2290.7773789699. Note that the first 3 decimals coincide. The cubic root of 5247661 is about 173.7755175330.

The spelling of 5247661 in words is "five million, two hundred forty-seven thousand, six hundred sixty-one".