4265221 has 8 divisors (see below), whose sum is σ = 4345344. Its totient is φ = 4186080.

The previous prime is 4265207. The next prime is 4265227. The reversal of 4265221 is 1225624.

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

It is a cyclic number.

It is not a de Polignac number, because 4265221 - 2⁹ = 4264709 is a prime.

It is a super-2 number, since 2×4265221² = 36384220357682, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4265192 and 4265201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4265227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22236 + ... + 22426.

It is an arithmetic number, because the mean of its divisors is an integer number (543168).

Almost surely, 2^4265221 is an apocalyptic number.

It is an amenable number.

4265221 is a deficient number, since it is larger than the sum of its proper divisors (80123).

4265221 is a wasteful number, since it uses less digits than its factorization.

4265221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 491.

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

The square root of 4265221 is about 2065.2411481471. The cubic root of 4265221 is about 162.1737327362.

It can be divided in two parts, 4 and 265221, that added together give a square (265225 = 515²).

The spelling of 4265221 in words is "four million, two hundred sixty-five thousand, two hundred twenty-one".