5127509 has 4 divisors (see below), whose sum is σ = 5133900. Its totient is φ = 5121120.

The previous prime is 5127503. The next prime is 5127527. The reversal of 5127509 is 9057215.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9057215 = 5 ⋅1811443.

It can be written as a sum of positive squares in 2 ways, for example, as 1716100 + 3411409 = 1310^2 + 1847^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5127509 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5127503) 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 in 3 ways as a sum of consecutive naturals, for example, 1784 + ... + 3665.

It is an arithmetic number, because the mean of its divisors is an integer number (1283475).

Almost surely, 2^5127509 is an apocalyptic number.

It is an amenable number.

5127509 is a deficient number, since it is larger than the sum of its proper divisors (6391).

5127509 is an equidigital number, since it uses as much as digits as its factorization.

5127509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6390.

The product of its (nonzero) digits is 3150, while the sum is 29.

The square root of 5127509 is about 2264.4003621268. The cubic root of 5127509 is about 172.4389926390.

The spelling of 5127509 in words is "five million, one hundred twenty-seven thousand, five hundred nine".