5665211 has 4 divisors (see below), whose sum is σ = 5963400. Its totient is φ = 5367024.

The previous prime is 5665193. The next prime is 5665213. The reversal of 5665211 is 1125665.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1125665 = 5 ⋅225133.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5665211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5665213) 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, 149066 + ... + 149103.

It is an arithmetic number, because the mean of its divisors is an integer number (1490850).

Almost surely, 2^5665211 is an apocalyptic number.

5665211 is a deficient number, since it is larger than the sum of its proper divisors (298189).

5665211 is a wasteful number, since it uses less digits than its factorization.

5665211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 298188.

The product of its digits is 1800, while the sum is 26.

The square root of 5665211 is about 2380.1703720532. The cubic root of 5665211 is about 178.2674408401.

The spelling of 5665211 in words is "five million, six hundred sixty-five thousand, two hundred eleven".