5597561 has 2 divisors, whose sum is σ = 5597562. Its totient is φ = 5597560.

The previous prime is 5597549. The next prime is 5597563. The reversal of 5597561 is 1657955.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4020025 + 1577536 = 2005^2 + 1256^2 .

It is a cyclic number.

It is not a de Polignac number, because 5597561 - 2⁶ = 5597497 is a prime.

Together with 5597563, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (5597563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2798780 + 2798781.

It is an arithmetic number, because the mean of its divisors is an integer number (2798781).

Almost surely, 2^5597561 is an apocalyptic number.

It is an amenable number.

5597561 is a deficient number, since it is larger than the sum of its proper divisors (1).

5597561 is an equidigital number, since it uses as much as digits as its factorization.

5597561 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 47250, while the sum is 38.

The square root of 5597561 is about 2365.9165243093. The cubic root of 5597561 is about 177.5550156779. Note that the first 3 decimals are identical.

The spelling of 5597561 in words is "five million, five hundred ninety-seven thousand, five hundred sixty-one".