5318581 has 2 divisors, whose sum is σ = 5318582. Its totient is φ = 5318580.

The previous prime is 5318563. The next prime is 5318587. The reversal of 5318581 is 1858135.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5130225 + 188356 = 2265^2 + 434^2 .

It is a cyclic number.

It is not a de Polignac number, because 5318581 - 2⁵ = 5318549 is a prime.

It is a super-2 number, since 2×5318581² = 56574607707122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5318587) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2659290 + 2659291.

It is an arithmetic number, because the mean of its divisors is an integer number (2659291).

Almost surely, 2^5318581 is an apocalyptic number.

It is an amenable number.

5318581 is a deficient number, since it is larger than the sum of its proper divisors (1).

5318581 is an equidigital number, since it uses as much as digits as its factorization.

5318581 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4800, while the sum is 31.

The square root of 5318581 is about 2306.2048911578. The cubic root of 5318581 is about 174.5548523109.

The spelling of 5318581 in words is "five million, three hundred eighteen thousand, five hundred eighty-one".