5169509 has 2 divisors, whose sum is σ = 5169510. Its totient is φ = 5169508.

The previous prime is 5169497. The next prime is 5169551. The reversal of 5169509 is 9059615.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4452100 + 717409 = 2110^2 + 847^2 .

It is a cyclic number.

It is not a de Polignac number, because 5169509 - 2⁸ = 5169253 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5169559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2584754 + 2584755.

It is an arithmetic number, because the mean of its divisors is an integer number (2584755).

Almost surely, 2^5169509 is an apocalyptic number.

It is an amenable number.

5169509 is a deficient number, since it is larger than the sum of its proper divisors (1).

5169509 is an equidigital number, since it uses as much as digits as its factorization.

5169509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12150, while the sum is 35.

The square root of 5169509 is about 2273.6554268402. The cubic root of 5169509 is about 172.9085352993.

The spelling of 5169509 in words is "five million, one hundred sixty-nine thousand, five hundred nine".