5640331 has 2 divisors, whose sum is σ = 5640332. Its totient is φ = 5640330.

The previous prime is 5640293. The next prime is 5640337. The reversal of 5640331 is 1330465.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 5640331 - 2¹⁹ = 5116043 is a prime.

It is a super-2 number, since 2×5640331² = 63626667579122, which contains 22 as substring.

It is a Chen prime.

It is a nialpdrome in base 15.

It is not a weakly prime, because it can be changed into another prime (5640337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2820165 + 2820166.

It is an arithmetic number, because the mean of its divisors is an integer number (2820166).

Almost surely, 2^5640331 is an apocalyptic number.

5640331 is a deficient number, since it is larger than the sum of its proper divisors (1).

5640331 is an equidigital number, since it uses as much as digits as its factorization.

5640331 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1080, while the sum is 22.

The square root of 5640331 is about 2374.9381044566. The cubic root of 5640331 is about 178.0060911942.

Adding to 5640331 its reverse (1330465), we get a palindrome (6970796).

The spelling of 5640331 in words is "five million, six hundred forty thousand, three hundred thirty-one".