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5666221 = 11515111
BaseRepresentation
bin10101100111010110101101
3101122212121001
4111213112231
52422304341
6321240301
766106411
oct25472655
911585531
105666221
113220130
121a93091
1312350c2
14a76d41
1576dd31
hex5675ad

5666221 has 4 divisors (see below), whose sum is σ = 6181344. Its totient is φ = 5151100.

The previous prime is 5666209. The next prime is 5666233. The reversal of 5666221 is 1226665.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (5666209) and next prime (5666233).

It is a cyclic number.

It is not a de Polignac number, because 5666221 - 25 = 5666189 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 5666221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5666251) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 257545 + ... + 257566.

It is an arithmetic number, because the mean of its divisors is an integer number (1545336).

Almost surely, 25666221 is an apocalyptic number.

It is an amenable number.

5666221 is a deficient number, since it is larger than the sum of its proper divisors (515123).

5666221 is a wasteful number, since it uses less digits than its factorization.

5666221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 515122.

The product of its digits is 4320, while the sum is 28.

The square root of 5666221 is about 2380.3825322834. The cubic root of 5666221 is about 178.2780341152.

The spelling of 5666221 in words is "five million, six hundred sixty-six thousand, two hundred twenty-one".

Divisors: 1 11 515111 5666221