520020002 has 4 divisors (see below), whose sum is σ = 780030006. Its totient is φ = 260010000.

The previous prime is 520020001. The next prime is 520020019. The reversal of 520020002 is 200020025.

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., 448126561 + 71893441 = 21169^2 + 8479^2 .

It is not an unprimeable number, because it can be changed into a prime (520020001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 130004999 + ... + 130005002.

Almost surely, 2^520020002 is an apocalyptic number.

520020002 is a deficient number, since it is larger than the sum of its proper divisors (260010004).

520020002 is a wasteful number, since it uses less digits than its factorization.

520020002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 260010003.

The product of its (nonzero) digits is 40, while the sum is 11.

The square root of 520020002 is about 22803.9470706279. The cubic root of 520020002 is about 804.1554621698.

Adding to 520020002 its reverse (200020025), we get a palindrome (720040027).

The spelling of 520020002 in words is "five hundred twenty million, twenty thousand, two".