5565731 has 4 divisors (see below), whose sum is σ = 5632872. Its totient is φ = 5498592.

The previous prime is 5565719. The next prime is 5565733. The reversal of 5565731 is 1375655.

5565731 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1375655 = 5 ⋅275131.

It is a cyclic number.

It is not a de Polignac number, because 5565731 - 2⁶ = 5565667 is a prime.

It is a super-2 number, since 2×5565731² = 61954723128722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5565733) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33446 + ... + 33611.

It is an arithmetic number, because the mean of its divisors is an integer number (1408218).

Almost surely, 2^5565731 is an apocalyptic number.

5565731 is a deficient number, since it is larger than the sum of its proper divisors (67141).

5565731 is an equidigital number, since it uses as much as digits as its factorization.

5565731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67140.

The product of its digits is 15750, while the sum is 32.

The square root of 5565731 is about 2359.1801542061. The cubic root of 5565731 is about 177.2178258135.

The spelling of 5565731 in words is "five million, five hundred sixty-five thousand, seven hundred thirty-one".