509424197 has 2 divisors, whose sum is σ = 509424198. Its totient is φ = 509424196.

The previous prime is 509424191. The next prime is 509424229. The reversal of 509424197 is 791424905.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 407797636 + 101626561 = 20194^2 + 10081^2 .

It is a cyclic number.

It is not a de Polignac number, because 509424197 - 2²⁴ = 492646981 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (509424191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 254712098 + 254712099.

It is an arithmetic number, because the mean of its divisors is an integer number (254712099).

Almost surely, 2^509424197 is an apocalyptic number.

It is an amenable number.

509424197 is a deficient number, since it is larger than the sum of its proper divisors (1).

509424197 is an equidigital number, since it uses as much as digits as its factorization.

509424197 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 90720, while the sum is 41.

The square root of 509424197 is about 22570.4274881979. The cubic root of 509424197 is about 798.6561798858.

The spelling of 509424197 in words is "five hundred nine million, four hundred twenty-four thousand, one hundred ninety-seven".