520872853 has 4 divisors (see below), whose sum is σ = 523600128. Its totient is φ = 518145580.

The previous prime is 520872851. The next prime is 520872883. The reversal of 520872853 is 358278025.

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 520872853 - 2¹ = 520872851 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520872851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1363351 + ... + 1363732.

It is an arithmetic number, because the mean of its divisors is an integer number (130900032).

Almost surely, 2^520872853 is an apocalyptic number.

It is an amenable number.

520872853 is a deficient number, since it is larger than the sum of its proper divisors (2727275).

520872853 is a wasteful number, since it uses less digits than its factorization.

520872853 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2727274.

The product of its (nonzero) digits is 134400, while the sum is 40.

The square root of 520872853 is about 22822.6390454741. The cubic root of 520872853 is about 804.5948364266.

The spelling of 520872853 in words is "five hundred twenty million, eight hundred seventy-two thousand, eight hundred fifty-three".