5550561 has 6 divisors (see below), whose sum is σ = 8017490. Its totient is φ = 3700368.

The previous prime is 5550557. The next prime is 5550563. The reversal of 5550561 is 1650555.

5550561 is a `hidden beast` number, since 55 + 50 + 561 = 666.

It can be written as a sum of positive squares in only one way, i.e., 3744225 + 1806336 = 1935^2 + 1344^2 .

It is not a de Polignac number, because 5550561 - 2² = 5550557 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5550563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 308356 + ... + 308373.

Almost surely, 2^5550561 is an apocalyptic number.

It is an amenable number.

5550561 is a deficient number, since it is larger than the sum of its proper divisors (2466929).

5550561 is a wasteful number, since it uses less digits than its factorization.

5550561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 616735 (or 616732 counting only the distinct ones).

The product of its (nonzero) digits is 3750, while the sum is 27.

The square root of 5550561 is about 2355.9628604883. The cubic root of 5550561 is about 177.0566705447.

The spelling of 5550561 in words is "five million, five hundred fifty thousand, five hundred sixty-one".