345216497 has 2 divisors, whose sum is σ = 345216498. Its totient is φ = 345216496.

The previous prime is 345216481. The next prime is 345216503. The reversal of 345216497 is 794612543.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 335475856 + 9740641 = 18316^2 + 3121^2 .

It is a cyclic number.

It is not a de Polignac number, because 345216497 - 2⁴ = 345216481 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (345216437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172608248 + 172608249.

It is an arithmetic number, because the mean of its divisors is an integer number (172608249).

Almost surely, 2^345216497 is an apocalyptic number.

It is an amenable number.

345216497 is a deficient number, since it is larger than the sum of its proper divisors (1).

345216497 is an equidigital number, since it uses as much as digits as its factorization.

345216497 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 181440, while the sum is 41.

The square root of 345216497 is about 18580.0026103335. The cubic root of 345216497 is about 701.5045848065.

The spelling of 345216497 in words is "three hundred forty-five million, two hundred sixteen thousand, four hundred ninety-seven".