515323253 has 4 divisors (see below), whose sum is σ = 516017568. Its totient is φ = 514628940.

The previous prime is 515323247. The next prime is 515323271. The reversal of 515323253 is 352323515.

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 a cyclic number.

It is not a de Polignac number, because 515323253 - 2¹⁰ = 515322229 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 (515323273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 346043 + ... + 347528.

It is an arithmetic number, because the mean of its divisors is an integer number (129004392).

Almost surely, 2^515323253 is an apocalyptic number.

It is an amenable number.

515323253 is a deficient number, since it is larger than the sum of its proper divisors (694315).

515323253 is an equidigital number, since it uses as much as digits as its factorization.

515323253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 694314.

The product of its digits is 13500, while the sum is 29.

The square root of 515323253 is about 22700.7324331177. The cubic root of 515323253 is about 801.7271295336.

Adding to 515323253 its reverse (352323515), we get a palindrome (867646768).

The spelling of 515323253 in words is "five hundred fifteen million, three hundred twenty-three thousand, two hundred fifty-three".