5187509 has 4 divisors (see below), whose sum is σ = 5354880. Its totient is φ = 5020140.

The previous prime is 5187503. The next prime is 5187517. The reversal of 5187509 is 9057815.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 5187509 - 2²⁰ = 4138933 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 (5187503) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 83639 + ... + 83700.

It is an arithmetic number, because the mean of its divisors is an integer number (1338720).

Almost surely, 2^5187509 is an apocalyptic number.

It is an amenable number.

5187509 is a deficient number, since it is larger than the sum of its proper divisors (167371).

5187509 is a wasteful number, since it uses less digits than its factorization.

5187509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167370.

The product of its (nonzero) digits is 12600, while the sum is 35.

The square root of 5187509 is about 2277.6103705419. The cubic root of 5187509 is about 173.1089894268.

The spelling of 5187509 in words is "five million, one hundred eighty-seven thousand, five hundred nine".