7265221 has 2 divisors, whose sum is σ = 7265222. Its totient is φ = 7265220.

The previous prime is 7265207. The next prime is 7265227. The reversal of 7265221 is 1225627.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7214596 + 50625 = 2686^2 + 225^2 .

It is a cyclic number.

It is not a de Polignac number, because 7265221 - 2⁵ = 7265189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7265227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3632610 + 3632611.

It is an arithmetic number, because the mean of its divisors is an integer number (3632611).

Almost surely, 2^7265221 is an apocalyptic number.

It is an amenable number.

7265221 is a deficient number, since it is larger than the sum of its proper divisors (1).

7265221 is an equidigital number, since it uses as much as digits as its factorization.

7265221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1680, while the sum is 25.

The square root of 7265221 is about 2695.4073903586. The cubic root of 7265221 is about 193.6791824433.

The spelling of 7265221 in words is "seven million, two hundred sixty-five thousand, two hundred twenty-one".