5655221 has 16 divisors (see below), whose sum is σ = 6749568. Its totient is φ = 4670400.

The previous prime is 5655211. The next prime is 5655227. The reversal of 5655221 is 1225565.

It is a cyclic number.

It is not a de Polignac number, because 5655221 - 2⁶ = 5655157 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 (5655227) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9875 + ... + 10431.

It is an arithmetic number, because the mean of its divisors is an integer number (421848).

Almost surely, 2^5655221 is an apocalyptic number.

It is an amenable number.

5655221 is a deficient number, since it is larger than the sum of its proper divisors (1094347).

5655221 is a wasteful number, since it uses less digits than its factorization.

5655221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 652.

The product of its digits is 3000, while the sum is 26.

The square root of 5655221 is about 2378.0708568081. The cubic root of 5655221 is about 178.1625939323.

The spelling of 5655221 in words is "five million, six hundred fifty-five thousand, two hundred twenty-one".