2318561 has 8 divisors (see below), whose sum is σ = 2765184. Its totient is φ = 1900800.

The previous prime is 2318543. The next prime is 2318567. The reversal of 2318561 is 1658132.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2318561 is a prime.

It is a super-2 number, since 2×2318561² = 10751450221442, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2318561.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2318567) 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, 7040 + ... + 7361.

It is an arithmetic number, because the mean of its divisors is an integer number (345648).

2^2318561 is an apocalyptic number.

It is an amenable number.

2318561 is a deficient number, since it is larger than the sum of its proper divisors (446623).

2318561 is a wasteful number, since it uses less digits than its factorization.

2318561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14431.

The product of its digits is 1440, while the sum is 26.

The square root of 2318561 is about 1522.6821730092. The cubic root of 2318561 is about 132.3547429162.

The spelling of 2318561 in words is "two million, three hundred eighteen thousand, five hundred sixty-one".