5156509 has 8 divisors (see below), whose sum is σ = 5358080. Its totient is φ = 4957200.

The previous prime is 5156497. The next prime is 5156527. The reversal of 5156509 is 9056515.

It is a happy number.

5156509 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 5156509 - 2⁵ = 5156477 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5156539) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5152 + ... + 6070.

It is an arithmetic number, because the mean of its divisors is an integer number (669760).

Almost surely, 2^5156509 is an apocalyptic number.

It is an amenable number.

5156509 is a deficient number, since it is larger than the sum of its proper divisors (201571).

5156509 is a wasteful number, since it uses less digits than its factorization.

5156509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1131.

The product of its (nonzero) digits is 6750, while the sum is 31.

The square root of 5156509 is about 2270.7947947800. The cubic root of 5156509 is about 172.7634733073.

It can be divided in two parts, 5156 and 509, that added together give a palindrome (5665).

The spelling of 5156509 in words is "five million, one hundred fifty-six thousand, five hundred nine".