5661289 has 8 divisors (see below), whose sum is σ = 6255360. Its totient is φ = 5096256.

The previous prime is 5661287. The next prime is 5661311. The reversal of 5661289 is 9821665.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 5661289 - 2¹ = 5661287 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5661281) 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 7 ways as a sum of consecutive naturals, for example, 6849 + ... + 7630.

It is an arithmetic number, because the mean of its divisors is an integer number (781920).

Almost surely, 2^5661289 is an apocalyptic number.

It is an amenable number.

5661289 is a deficient number, since it is larger than the sum of its proper divisors (594071).

5661289 is a wasteful number, since it uses less digits than its factorization.

5661289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14519.

The product of its digits is 25920, while the sum is 37.

The square root of 5661289 is about 2379.3463388082. The cubic root of 5661289 is about 178.2262934284.

The spelling of 5661289 in words is "five million, six hundred sixty-one thousand, two hundred eighty-nine".