514145309 has 2 divisors, whose sum is σ = 514145310. Its totient is φ = 514145308.

The previous prime is 514145287. The next prime is 514145329. The reversal of 514145309 is 903541415.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 468852409 + 45292900 = 21653^2 + 6730^2 .

It is a cyclic number.

It is not a de Polignac number, because 514145309 - 2⁸ = 514145053 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 (514145329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 257072654 + 257072655.

It is an arithmetic number, because the mean of its divisors is an integer number (257072655).

Almost surely, 2^514145309 is an apocalyptic number.

It is an amenable number.

514145309 is a deficient number, since it is larger than the sum of its proper divisors (1).

514145309 is an equidigital number, since it uses as much as digits as its factorization.

514145309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10800, while the sum is 32.

The square root of 514145309 is about 22674.7725236660. The cubic root of 514145309 is about 801.1157914757.

The spelling of 514145309 in words is "five hundred fourteen million, one hundred forty-five thousand, three hundred nine".