7194221 has 2 divisors, whose sum is σ = 7194222. Its totient is φ = 7194220.

The previous prime is 7194181. The next prime is 7194227. The reversal of 7194221 is 1224917.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4791721 + 2402500 = 2189^2 + 1550^2 .

It is a cyclic number.

It is not a de Polignac number, because 7194221 - 2¹⁴ = 7177837 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7194227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3597110 + 3597111.

It is an arithmetic number, because the mean of its divisors is an integer number (3597111).

Almost surely, 2^7194221 is an apocalyptic number.

It is an amenable number.

7194221 is a deficient number, since it is larger than the sum of its proper divisors (1).

7194221 is an equidigital number, since it uses as much as digits as its factorization.

7194221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1008, while the sum is 26.

The square root of 7194221 is about 2682.2045037618. The cubic root of 7194221 is about 193.0462004710.

The spelling of 7194221 in words is "seven million, one hundred ninety-four thousand, two hundred twenty-one".