6255221 has 4 divisors (see below), whose sum is σ = 7148832. Its totient is φ = 5361612.

The previous prime is 6255217. The next prime is 6255229. The reversal of 6255221 is 1225526.

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, and also an emirpimes, since its reverse is a distinct semiprime: 1225526 = 2 ⋅612763.

It is a cyclic number.

It is not a de Polignac number, because 6255221 - 2² = 6255217 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 (6255229) 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, 446795 + ... + 446808.

It is an arithmetic number, because the mean of its divisors is an integer number (1787208).

Almost surely, 2^6255221 is an apocalyptic number.

It is an amenable number.

6255221 is a deficient number, since it is larger than the sum of its proper divisors (893611).

6255221 is an equidigital number, since it uses as much as digits as its factorization.

6255221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 893610.

The product of its digits is 1200, while the sum is 23.

The square root of 6255221 is about 2501.0439820203. The cubic root of 6255221 is about 184.2528521989.

The spelling of 6255221 in words is "six million, two hundred fifty-five thousand, two hundred twenty-one".