520523000 has 128 divisors (see below), whose sum is σ = 1311785280. Its totient is φ = 192614400.

The previous prime is 520522991. The next prime is 520523009. The reversal of 520523000 is 325025.

It is an interprime number because it is at equal distance from previous prime (520522991) and next prime (520523009).

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a self number, because there is not a number n which added to its sum of digits gives 520523000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520523009) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1138772 + ... + 1139228.

Almost surely, 2^520523000 is an apocalyptic number.

520523000 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 520523000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (655892640).

520523000 is an abundant number, since it is smaller than the sum of its proper divisors (791262280).

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

520523000 is a wasteful number, since it uses less digits than its factorization.

520523000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 562 (or 548 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 17.

The square root of 520523000 is about 22814.9731536112. The cubic root of 520523000 is about 804.4146562018.

Adding to 520523000 its reverse (325025), we get a palindrome (520848025).

The spelling of 520523000 in words is "five hundred twenty million, five hundred twenty-three thousand".