7220417 has 2 divisors, whose sum is σ = 7220418. Its totient is φ = 7220416.

The previous prime is 7220407. The next prime is 7220441. The reversal of 7220417 is 7140227.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3984016 + 3236401 = 1996^2 + 1799^2 .

It is an emirp because it is prime and its reverse (7140227) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7220417 - 2¹⁴ = 7204033 is a prime.

It is a Chen prime.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 7220392 and 7220401.

It is not a weakly prime, because it can be changed into another prime (7220407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3610208 + 3610209.

It is an arithmetic number, because the mean of its divisors is an integer number (3610209).

Almost surely, 2^7220417 is an apocalyptic number.

It is an amenable number.

7220417 is a deficient number, since it is larger than the sum of its proper divisors (1).

7220417 is an equidigital number, since it uses as much as digits as its factorization.

7220417 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 784, while the sum is 23.

The square root of 7220417 is about 2687.0833630537. The cubic root of 7220417 is about 193.2802268590.

The spelling of 7220417 in words is "seven million, two hundred twenty thousand, four hundred seventeen".