5640361 has 2 divisors, whose sum is σ = 5640362. Its totient is φ = 5640360.

The previous prime is 5640347. The next prime is 5640367. The reversal of 5640361 is 1630465.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4756761 + 883600 = 2181^2 + 940^2 .

It is a cyclic number.

It is not a de Polignac number, because 5640361 - 2¹¹ = 5638313 is a prime.

5640361 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (5640367) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2820180 + 2820181.

It is an arithmetic number, because the mean of its divisors is an integer number (2820181).

Almost surely, 2^5640361 is an apocalyptic number.

It is an amenable number.

5640361 is a deficient number, since it is larger than the sum of its proper divisors (1).

5640361 is an equidigital number, since it uses as much as digits as its factorization.

5640361 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 5640361 is about 2374.9444204023. The cubic root of 5640361 is about 178.0064067887.

The spelling of 5640361 in words is "five million, six hundred forty thousand, three hundred sixty-one".