3497775221 has 2 divisors, whose sum is σ = 3497775222. Its totient is φ = 3497775220.

The previous prime is 3497775181. The next prime is 3497775223. The reversal of 3497775221 is 1225777943.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1759802500 + 1737972721 = 41950^2 + 41689^2 .

It is a cyclic number.

It is not a de Polignac number, because 3497775221 - 2⁶ = 3497775157 is a prime.

Together with 3497775223, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3497775223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1748887610 + 1748887611.

It is an arithmetic number, because the mean of its divisors is an integer number (1748887611).

Almost surely, 2^3497775221 is an apocalyptic number.

It is an amenable number.

3497775221 is a deficient number, since it is larger than the sum of its proper divisors (1).

3497775221 is an equidigital number, since it uses as much as digits as its factorization.

3497775221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 740880, while the sum is 47.

The square root of 3497775221 is about 59141.9920276617. The cubic root of 3497775221 is about 1517.9727158753.

The spelling of 3497775221 in words is "three billion, four hundred ninety-seven million, seven hundred seventy-five thousand, two hundred twenty-one".