521230050 has 144 divisors (see below), whose sum is σ = 1580791680. Its totient is φ = 121968000.

The previous prime is 521230049. The next prime is 521230057. The reversal of 521230050 is 50032125.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (521230057) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 141735 + ... + 145365.

It is an arithmetic number, because the mean of its divisors is an integer number (10977720).

Almost surely, 2^521230050 is an apocalyptic number.

521230050 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 521230050, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (790395840).

521230050 is an abundant number, since it is smaller than the sum of its proper divisors (1059561630).

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

521230050 is a wasteful number, since it uses less digits than its factorization.

521230050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3689 (or 3681 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 18.

The square root of 521230050 is about 22830.4632016085. The cubic root of 521230050 is about 804.7787157163.

Adding to 521230050 its reverse (50032125), we get a palindrome (571262175).

The spelling of 521230050 in words is "five hundred twenty-one million, two hundred thirty thousand, fifty".