6245221 has 4 divisors (see below), whose sum is σ = 6252012. Its totient is φ = 6238432.

The previous prime is 6245203. The next prime is 6245249. The reversal of 6245221 is 1225426.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 1225426 = 2 ⋅612713.

It can be written as a sum of positive squares in 2 ways, for example, as 1232100 + 5013121 = 1110^2 + 2239^2 .

It is a cyclic number.

It is not a de Polignac number, because 6245221 - 2⁵ = 6245189 is a prime.

It is a Duffinian number.

6245221 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 6245192 and 6245201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6245201) 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, 1750 + ... + 3943.

It is an arithmetic number, because the mean of its divisors is an integer number (1563003).

Almost surely, 2^6245221 is an apocalyptic number.

It is an amenable number.

6245221 is a deficient number, since it is larger than the sum of its proper divisors (6791).

6245221 is a wasteful number, since it uses less digits than its factorization.

6245221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6790.

The product of its digits is 960, while the sum is 22.

The square root of 6245221 is about 2499.0440172194. The cubic root of 6245221 is about 184.1546136631.

The spelling of 6245221 in words is "six million, two hundred forty-five thousand, two hundred twenty-one".