2318521 has 8 divisors (see below), whose sum is σ = 2476800. Its totient is φ = 2165520.

The previous prime is 2318507. The next prime is 2318527. The reversal of 2318521 is 1258132.

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 2318521 - 2⁵ = 2318489 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2318492 and 2318501.

It is not an unprimeable number, because it can be changed into a prime (2318527) 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, 391 + ... + 2188.

It is an arithmetic number, because the mean of its divisors is an integer number (309600).

2^2318521 is an apocalyptic number.

It is an amenable number.

2318521 is a deficient number, since it is larger than the sum of its proper divisors (158279).

2318521 is a wasteful number, since it uses less digits than its factorization.

2318521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2639.

The product of its digits is 480, while the sum is 22.

The square root of 2318521 is about 1522.6690382352. The cubic root of 2318521 is about 132.3539817802.

The spelling of 2318521 in words is "two million, three hundred eighteen thousand, five hundred twenty-one".