5178009 has 4 divisors (see below), whose sum is σ = 6904016. Its totient is φ = 3452004.

The previous prime is 5178007. The next prime is 5178029. The reversal of 5178009 is 9008715.

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 5178009 - 2¹ = 5178007 is a prime.

It is a D-number.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (5178001) 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, 862999 + ... + 863004.

It is an arithmetic number, because the mean of its divisors is an integer number (1726004).

Almost surely, 2^5178009 is an apocalyptic number.

It is an amenable number.

5178009 is a deficient number, since it is larger than the sum of its proper divisors (1726007).

5178009 is a wasteful number, since it uses less digits than its factorization.

5178009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1726006.

The product of its (nonzero) digits is 2520, while the sum is 30.

The square root of 5178009 is about 2275.5238957216. The cubic root of 5178009 is about 173.0032520800.

The spelling of 5178009 in words is "five million, one hundred seventy-eight thousand, nine".