5221561 has 8 divisors (see below), whose sum is σ = 5528000. Its totient is φ = 4918320.

The previous prime is 5221549. The next prime is 5221577. The reversal of 5221561 is 1651225.

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 5221561 - 2⁹ = 5221049 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5221501) 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, 3091 + ... + 4471.

It is an arithmetic number, because the mean of its divisors is an integer number (691000).

Almost surely, 2^5221561 is an apocalyptic number.

It is an amenable number.

5221561 is a deficient number, since it is larger than the sum of its proper divisors (306439).

5221561 is a wasteful number, since it uses less digits than its factorization.

5221561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1599.

The product of its digits is 600, while the sum is 22.

The square root of 5221561 is about 2285.0735217931. The cubic root of 5221561 is about 173.4869393618.

Adding to 5221561 its reverse (1651225), we get a palindrome (6872786).

The spelling of 5221561 in words is "five million, two hundred twenty-one thousand, five hundred sixty-one".