513133253 has 4 divisors (see below), whose sum is σ = 543317580. Its totient is φ = 482948928.

The previous prime is 513133249. The next prime is 513133301. The reversal of 513133253 is 352331315.

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 254019844 + 259113409 = 15938^2 + 16097^2 .

It is a cyclic number.

It is not a de Polignac number, because 513133253 - 2² = 513133249 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 (513133223) 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, 15092138 + ... + 15092171.

It is an arithmetic number, because the mean of its divisors is an integer number (135829395).

Almost surely, 2^513133253 is an apocalyptic number.

It is an amenable number.

513133253 is a deficient number, since it is larger than the sum of its proper divisors (30184327).

513133253 is a wasteful number, since it uses less digits than its factorization.

513133253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30184326.

The product of its digits is 4050, while the sum is 26.

The square root of 513133253 is about 22652.4447466493. Note that the first 3 decimals coincide. The cubic root of 513133253 is about 800.5898009991.

Adding to 513133253 its reverse (352331315), we get a palindrome (865464568).

The spelling of 513133253 in words is "five hundred thirteen million, one hundred thirty-three thousand, two hundred fifty-three".