5618521 has 8 divisors (see below), whose sum is σ = 5779584. Its totient is φ = 5459280.

The previous prime is 5618497. The next prime is 5618537. The reversal of 5618521 is 1258165.

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 5618521 - 2⁹ = 5618009 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a self number, because there is not a number n which added to its sum of digits gives 5618521.

It is not an unprimeable number, because it can be changed into a prime (5618581) 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, 7786 + ... + 8476.

It is an arithmetic number, because the mean of its divisors is an integer number (722448).

Almost surely, 2^5618521 is an apocalyptic number.

It is an amenable number.

5618521 is a deficient number, since it is larger than the sum of its proper divisors (161063).

5618521 is a wasteful number, since it uses less digits than its factorization.

5618521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 911.

The product of its digits is 2400, while the sum is 28.

The square root of 5618521 is about 2370.3419584524. The cubic root of 5618521 is about 177.7763571790.

The spelling of 5618521 in words is "five million, six hundred eighteen thousand, five hundred twenty-one".