5121313 has 4 divisors (see below), whose sum is σ = 5297940. Its totient is φ = 4944688.

The previous prime is 5121289. The next prime is 5121323. The reversal of 5121313 is 3131215.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2712609 + 2408704 = 1647^2 + 1552^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5121313 is a prime.

It is a Duffinian number.

5121313 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (5121323) 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, 88270 + ... + 88327.

It is an arithmetic number, because the mean of its divisors is an integer number (1324485).

Almost surely, 2^5121313 is an apocalyptic number.

It is an amenable number.

5121313 is a deficient number, since it is larger than the sum of its proper divisors (176627).

5121313 is a wasteful number, since it uses less digits than its factorization.

5121313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176626.

The product of its digits is 90, while the sum is 16.

The square root of 5121313 is about 2263.0318159496. The cubic root of 5121313 is about 172.3695071347.

Adding to 5121313 its reverse (3131215), we get a palindrome (8252528).

The spelling of 5121313 in words is "five million, one hundred twenty-one thousand, three hundred thirteen".