5121609 has 8 divisors (see below), whose sum is σ = 6896832. Its totient is φ = 3380400.

The previous prime is 5121593. The next prime is 5121631. The reversal of 5121609 is 9061215.

5121609 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 not a de Polignac number, because 5121609 - 2⁴ = 5121593 is a prime.

It is a Smith number, since the sum of its digits (24) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5121689) 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, 8149 + ... + 8754.

It is an arithmetic number, because the mean of its divisors is an integer number (862104).

Almost surely, 2^5121609 is an apocalyptic number.

It is an amenable number.

5121609 is a deficient number, since it is larger than the sum of its proper divisors (1775223).

5121609 is a wasteful number, since it uses less digits than its factorization.

5121609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17007.

The product of its (nonzero) digits is 540, while the sum is 24.

The square root of 5121609 is about 2263.0972139968. The cubic root of 5121609 is about 172.3728279232.

The spelling of 5121609 in words is "five million, one hundred twenty-one thousand, six hundred nine".