5731566 has 8 divisors (see below), whose sum is σ = 11463144. Its totient is φ = 1910520.

The previous prime is 5731549. The next prime is 5731571. The reversal of 5731566 is 6651375.

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

5731566 is an admirable number.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 477625 + ... + 477636.

It is an arithmetic number, because the mean of its divisors is an integer number (1432893).

Almost surely, 2^5731566 is an apocalyptic number.

5731566 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

5731566 is a wasteful number, since it uses less digits than its factorization.

5731566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 955266.

The product of its digits is 18900, while the sum is 33.

The square root of 5731566 is about 2394.0689213137. The cubic root of 5731566 is about 178.9607395976.

The spelling of 5731566 in words is "five million, seven hundred thirty-one thousand, five hundred sixty-six".