6221271 has 8 divisors (see below), whose sum is σ = 9480064. Its totient is φ = 3555000.

The previous prime is 6221263. The next prime is 6221273. The reversal of 6221271 is 1721226.

6221271 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 6221271 - 2³ = 6221263 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 296251 = 6221271 / (6 + 2 + 2 + 1 + 2 + 7 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6221273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 148105 + ... + 148146.

It is an arithmetic number, because the mean of its divisors is an integer number (1185008).

Almost surely, 2^6221271 is an apocalyptic number.

6221271 is a deficient number, since it is larger than the sum of its proper divisors (3258793).

6221271 is a wasteful number, since it uses less digits than its factorization.

6221271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 296261.

The product of its digits is 336, while the sum is 21.

The square root of 6221271 is about 2494.2475819373. The cubic root of 6221271 is about 183.9189052692.

Adding to 6221271 its reverse (1721226), we get a palindrome (7942497).

The spelling of 6221271 in words is "six million, two hundred twenty-one thousand, two hundred seventy-one".