520621010 has 64 divisors (see below), whose sum is σ = 1160393472. Its totient is φ = 163766016.

The previous prime is 520621009. The next prime is 520621027. The reversal of 520621010 is 10126025.

It is a super-3 number, since 3×520621010³ (a number of 27 digits) contains 333 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 520621010.

It is an unprimeable number.

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 in 31 ways as a sum of consecutive naturals, for example, 155777 + ... + 159083.

It is an arithmetic number, because the mean of its divisors is an integer number (18131148).

Almost surely, 2^520621010 is an apocalyptic number.

520621010 is an abundant number, since it is smaller than the sum of its proper divisors (639772462).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

520621010 is a wasteful number, since it uses less digits than its factorization.

520621010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3507.

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 520621010 is about 22817.1209840330. The cubic root of 520621010 is about 804.4651411516.

Adding to 520621010 its reverse (10126025), we get a palindrome (530747035).

The spelling of 520621010 in words is "five hundred twenty million, six hundred twenty-one thousand, ten".