5549561 has 2 divisors, whose sum is σ = 5549562. Its totient is φ = 5549560.

The previous prime is 5549483. The next prime is 5549569. The reversal of 5549561 is 1659455.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5494336 + 55225 = 2344^2 + 235^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5549561 is a prime.

It is a Chen prime.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (5549569) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2774780 + 2774781.

It is an arithmetic number, because the mean of its divisors is an integer number (2774781).

Almost surely, 2^5549561 is an apocalyptic number.

It is an amenable number.

5549561 is a deficient number, since it is larger than the sum of its proper divisors (1).

5549561 is an equidigital number, since it uses as much as digits as its factorization.

5549561 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27000, while the sum is 35.

The square root of 5549561 is about 2355.7506234744. The cubic root of 5549561 is about 177.0460369466.

The spelling of 5549561 in words is "five million, five hundred forty-nine thousand, five hundred sixty-one".