5209657 has 2 divisors, whose sum is σ = 5209658. Its totient is φ = 5209656.

The previous prime is 5209627. The next prime is 5209669. The reversal of 5209657 is 7569025.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3031081 + 2178576 = 1741^2 + 1476^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5209657 is a prime.

It is not a weakly prime, because it can be changed into another prime (5209627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2604828 + 2604829.

It is an arithmetic number, because the mean of its divisors is an integer number (2604829).

Almost surely, 2^5209657 is an apocalyptic number.

It is an amenable number.

5209657 is a deficient number, since it is larger than the sum of its proper divisors (1).

5209657 is an equidigital number, since it uses as much as digits as its factorization.

5209657 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18900, while the sum is 34.

The square root of 5209657 is about 2282.4673053518. The cubic root of 5209657 is about 173.3550018112.

The spelling of 5209657 in words is "five million, two hundred nine thousand, six hundred fifty-seven".