520655000 has 80 divisors (see below), whose sum is σ = 1233167760. Its totient is φ = 206000000.

The previous prime is 520654991. The next prime is 520655011. The reversal of 520655000 is 556025.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 504485 + ... + 505515.

It is an arithmetic number, because the mean of its divisors is an integer number (15414597).

Almost surely, 2^520655000 is an apocalyptic number.

520655000 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 520655000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (616583880).

520655000 is an abundant number, since it is smaller than the sum of its proper divisors (712512760).

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

520655000 is a wasteful number, since it uses less digits than its factorization.

520655000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1158 (or 1139 counting only the distinct ones).

The product of its (nonzero) digits is 1500, while the sum is 23.

The square root of 520655000 is about 22817.8658073011. The cubic root of 520655000 is about 804.4826479205.

It can be divided in two parts, 5206 and 55000, that added together give a palindrome (60206).

The spelling of 520655000 in words is "five hundred twenty million, six hundred fifty-five thousand".