5109509 has 2 divisors, whose sum is σ = 5109510. Its totient is φ = 5109508.

The previous prime is 5109497. The next prime is 5109529. The reversal of 5109509 is 9059015.

5109509 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4937284 + 172225 = 2222^2 + 415^2 .

It is a cyclic number.

It is not a de Polignac number, because 5109509 - 2²⁰ = 4060933 is a prime.

It is a super-2 number, since 2×5109509² = 52214164442162, which contains 22 as substring.

It is a plaindrome in base 15.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5109529) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2554754 + 2554755.

It is an arithmetic number, because the mean of its divisors is an integer number (2554755).

Almost surely, 2^5109509 is an apocalyptic number.

It is an amenable number.

5109509 is a deficient number, since it is larger than the sum of its proper divisors (1).

5109509 is an equidigital number, since it uses as much as digits as its factorization.

5109509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2025, while the sum is 29.

The square root of 5109509 is about 2260.4223056765. The cubic root of 5109509 is about 172.2369750495.

The spelling of 5109509 in words is "five million, one hundred nine thousand, five hundred nine".