520212874 has 4 divisors (see below), whose sum is σ = 780319314. Its totient is φ = 260106436.

The previous prime is 520212871. The next prime is 520212881. The reversal of 520212874 is 478212025.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 449736849 + 70476025 = 21207^2 + 8395^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (520212871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 130053217 + ... + 130053220.

Almost surely, 2^520212874 is an apocalyptic number.

520212874 is a deficient number, since it is larger than the sum of its proper divisors (260106440).

520212874 is a wasteful number, since it uses less digits than its factorization.

520212874 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 260106439.

The product of its (nonzero) digits is 8960, while the sum is 31.

The square root of 520212874 is about 22808.1755956061. The cubic root of 520212874 is about 804.2548685392.

Adding to 520212874 its reverse (478212025), we get a palindrome (998424899).

The spelling of 520212874 in words is "five hundred twenty million, two hundred twelve thousand, eight hundred seventy-four".