5231665 has 16 divisors (see below), whose sum is σ = 6762960. Its totient is φ = 3870720.

The previous prime is 5231663. The next prime is 5231671. The reversal of 5231665 is 5661325.

It can be written as a sum of positive squares in 8 ways, for example, as 531441 + 4700224 = 729^2 + 2168^2 .

It is not a de Polignac number, because 5231665 - 2¹ = 5231663 is a prime.

It is a plaindrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (5231663) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4681 + ... + 5689.

It is an arithmetic number, because the mean of its divisors is an integer number (422685).

Almost surely, 2^5231665 is an apocalyptic number.

It is an amenable number.

5231665 is a deficient number, since it is larger than the sum of its proper divisors (1531295).

5231665 is a wasteful number, since it uses less digits than its factorization.

5231665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1092.

The product of its digits is 5400, while the sum is 28.

The square root of 5231665 is about 2287.2833230713. The cubic root of 5231665 is about 173.5987694314.

The spelling of 5231665 in words is "five million, two hundred thirty-one thousand, six hundred sixty-five".