5661333 has 20 divisors (see below), whose sum is σ = 8690220. Its totient is φ = 3670272.

The previous prime is 5661319. The next prime is 5661343. The reversal of 5661333 is 3331665.

5661333 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 4028049 + 1633284 = 2007^2 + 1278^2 .

It is not a de Polignac number, because 5661333 - 2⁴ = 5661317 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 5661297 and 5661306.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5661343) 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 19 ways as a sum of consecutive naturals, for example, 2053 + ... + 3941.

It is an arithmetic number, because the mean of its divisors is an integer number (434511).

Almost surely, 2^5661333 is an apocalyptic number.

It is an amenable number.

5661333 is a deficient number, since it is larger than the sum of its proper divisors (3028887).

5661333 is a wasteful number, since it uses less digits than its factorization.

5661333 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1938 (or 1929 counting only the distinct ones).

The product of its digits is 4860, while the sum is 27.

The square root of 5661333 is about 2379.3555850272. The cubic root of 5661333 is about 178.2267551570.

Adding to 5661333 its reverse (3331665), we get a palindrome (8992998).

The spelling of 5661333 in words is "five million, six hundred sixty-one thousand, three hundred thirty-three".