513685853 has 4 divisors (see below), whose sum is σ = 515337888. Its totient is φ = 512033820.

The previous prime is 513685847. The next prime is 513685867. The reversal of 513685853 is 358586315.

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 513685853 - 2⁶ = 513685789 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 (513685873) 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, 825551 + ... + 826172.

It is an arithmetic number, because the mean of its divisors is an integer number (128834472).

Almost surely, 2^513685853 is an apocalyptic number.

It is an amenable number.

513685853 is a deficient number, since it is larger than the sum of its proper divisors (1652035).

513685853 is a wasteful number, since it uses less digits than its factorization.

513685853 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1652034.

The product of its digits is 432000, while the sum is 44.

The square root of 513685853 is about 22664.6388235065. The cubic root of 513685853 is about 800.8770864852.

The spelling of 513685853 in words is "five hundred thirteen million, six hundred eighty-five thousand, eight hundred fifty-three".