515235253 has 8 divisors (see below), whose sum is σ = 555270968. Its totient is φ = 475257024.

The previous prime is 515235209. The next prime is 515235289. The reversal of 515235253 is 352532515.

It can be written as a sum of positive squares in 4 ways, for example, as 62694724 + 452540529 = 7918^2 + 21273^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-515235253 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 (515235353) 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, 5251 + ... + 32527.

It is an arithmetic number, because the mean of its divisors is an integer number (69408871).

Almost surely, 2^515235253 is an apocalyptic number.

It is an amenable number.

515235253 is a deficient number, since it is larger than the sum of its proper divisors (40035715).

515235253 is a wasteful number, since it uses less digits than its factorization.

515235253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28743.

The product of its digits is 22500, while the sum is 31.

The square root of 515235253 is about 22698.7940869113. The cubic root of 515235253 is about 801.6814908636.

Adding to 515235253 its reverse (352532515), we get a palindrome (867767768).

The spelling of 515235253 in words is "five hundred fifteen million, two hundred thirty-five thousand, two hundred fifty-three".