5605621 has 8 divisors (see below), whose sum is σ = 6456384. Its totient is φ = 4767360.

The previous prime is 5605619. The next prime is 5605661. The reversal of 5605621 is 1265065.

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 5605621 - 2¹ = 5605619 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 (5605661) 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, 2140 + ... + 3973.

It is an arithmetic number, because the mean of its divisors is an integer number (807048).

Almost surely, 2^5605621 is an apocalyptic number.

It is an amenable number.

5605621 is a deficient number, since it is larger than the sum of its proper divisors (850763).

5605621 is a wasteful number, since it uses less digits than its factorization.

5605621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6251.

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 5605621 is about 2367.6192683791. The cubic root of 5605621 is about 177.6401960563.

It can be divided in two parts, 5605 and 621, that added together give a palindrome (6226).

The spelling of 5605621 in words is "five million, six hundred five thousand, six hundred twenty-one".