523196209 has 2 divisors, whose sum is σ = 523196210. Its totient is φ = 523196208.

The previous prime is 523196171. The next prime is 523196213. The reversal of 523196209 is 902691325.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 265690000 + 257506209 = 16300^2 + 16047^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-523196209 is a prime.

It is a super-2 number, since 2×523196209² = 547468546223943362, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (523196239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 261598104 + 261598105.

It is an arithmetic number, because the mean of its divisors is an integer number (261598105).

Almost surely, 2^523196209 is an apocalyptic number.

It is an amenable number.

523196209 is a deficient number, since it is larger than the sum of its proper divisors (1).

523196209 is an equidigital number, since it uses as much as digits as its factorization.

523196209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 29160, while the sum is 37.

The square root of 523196209 is about 22873.4826600586. The cubic root of 523196209 is about 805.7893619024.

The spelling of 523196209 in words is "five hundred twenty-three million, one hundred ninety-six thousand, two hundred nine".