5635961 has 2 divisors, whose sum is σ = 5635962. Its totient is φ = 5635960.

The previous prime is 5635957. The next prime is 5635963. The reversal of 5635961 is 1695365.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5221225 + 414736 = 2285^2 + 644^2 .

It is a cyclic number.

It is not a de Polignac number, because 5635961 - 2² = 5635957 is a prime.

Together with 5635963, 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 (5635963) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2817980 + 2817981.

It is an arithmetic number, because the mean of its divisors is an integer number (2817981).

Almost surely, 2^5635961 is an apocalyptic number.

It is an amenable number.

5635961 is a deficient number, since it is larger than the sum of its proper divisors (1).

5635961 is an equidigital number, since it uses as much as digits as its factorization.

5635961 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 24300, while the sum is 35.

The square root of 5635961 is about 2374.0179022071. The cubic root of 5635961 is about 177.9601076280.

The spelling of 5635961 in words is "five million, six hundred thirty-five thousand, nine hundred sixty-one".