5665291 has 4 divisors (see below), whose sum is σ = 5911632. Its totient is φ = 5418952.

The previous prime is 5665277. The next prime is 5665313. The reversal of 5665291 is 1925665.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 5665291 - 2⁵ = 5665259 is a prime.

It is a super-2 number, since 2×5665291² = 64191044229362, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5665691) 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 3 ways as a sum of consecutive naturals, for example, 123136 + ... + 123181.

It is an arithmetic number, because the mean of its divisors is an integer number (1477908).

Almost surely, 2^5665291 is an apocalyptic number.

5665291 is a deficient number, since it is larger than the sum of its proper divisors (246341).

5665291 is a wasteful number, since it uses less digits than its factorization.

5665291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 246340.

The product of its digits is 16200, while the sum is 34.

The square root of 5665291 is about 2380.1871775136. The cubic root of 5665291 is about 178.2682799573.

The spelling of 5665291 in words is "five million, six hundred sixty-five thousand, two hundred ninety-one".