513001253 has 4 divisors (see below), whose sum is σ = 513112908. Its totient is φ = 512889600.

The previous prime is 513001243. The next prime is 513001259. The reversal of 513001253 is 352100315.

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 140588449 + 372412804 = 11857^2 + 19298^2 .

It is a cyclic number.

It is not a de Polignac number, because 513001253 - 2²⁰ = 511952677 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 (513001259) 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, 48626 + ... + 58227.

It is an arithmetic number, because the mean of its divisors is an integer number (128278227).

Almost surely, 2^513001253 is an apocalyptic number.

It is an amenable number.

513001253 is a deficient number, since it is larger than the sum of its proper divisors (111655).

513001253 is a wasteful number, since it uses less digits than its factorization.

513001253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111654.

The product of its (nonzero) digits is 450, while the sum is 20.

The square root of 513001253 is about 22649.5309664461. The cubic root of 513001253 is about 800.5211463719.

Adding to 513001253 its reverse (352100315), we get a palindrome (865101568).

The spelling of 513001253 in words is "five hundred thirteen million, one thousand, two hundred fifty-three".