5271665 has 12 divisors (see below), whose sum is σ = 7359156. Its totient is φ = 3614688.

The previous prime is 5271653. The next prime is 5271667. The reversal of 5271665 is 5661725.

It is a happy number.

5271665 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 1882384 + 3389281 = 1372^2 + 1841^2 .

It is not a de Polignac number, because 5271665 - 2¹⁰ = 5270641 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (5271667) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10514 + ... + 11003.

It is an arithmetic number, because the mean of its divisors is an integer number (613263).

Almost surely, 2^5271665 is an apocalyptic number.

It is an amenable number.

5271665 is a deficient number, since it is larger than the sum of its proper divisors (2087491).

5271665 is a wasteful number, since it uses less digits than its factorization.

5271665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21536 (or 21529 counting only the distinct ones).

The product of its digits is 12600, while the sum is 32.

The square root of 5271665 is about 2296.0106707069. The cubic root of 5271665 is about 174.0400775256.

It can be divided in two parts, 52 and 71665, that added together give a palindrome (71717).

The spelling of 5271665 in words is "five million, two hundred seventy-one thousand, six hundred sixty-five".