5318561 has 8 divisors (see below), whose sum is σ = 5526024. Its totient is φ = 5114880.

The previous prime is 5318549. The next prime is 5318563. The reversal of 5318561 is 1658135.

It can be written as a sum of positive squares in 4 ways, for example, as 115600 + 5202961 = 340^2 + 2281^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 5318561 - 2¹⁰ = 5317537 is a prime.

It is a super-2 number, since 2×5318561² = 56574182221442, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5318563) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2105 + ... + 3881.

It is an arithmetic number, because the mean of its divisors is an integer number (690753).

Almost surely, 2^5318561 is an apocalyptic number.

It is an amenable number.

5318561 is a deficient number, since it is larger than the sum of its proper divisors (207463).

5318561 is a wasteful number, since it uses less digits than its factorization.

5318561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1891.

The product of its digits is 3600, while the sum is 29.

The square root of 5318561 is about 2306.2005550255. The cubic root of 5318561 is about 174.5546335119.

The spelling of 5318561 in words is "five million, three hundred eighteen thousand, five hundred sixty-one".