524521530 has 48 divisors (see below), whose sum is σ = 1468663560. Its totient is φ = 129112704.

The previous prime is 524521507. The next prime is 524521537. The reversal of 524521530 is 35125425.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 451265049 + 73256481 = 21243^2 + 8559^2 .

It is a junction number, because it is equal to n+sod(n) for n = 524521494 and 524521503.

It is not an unprimeable number, because it can be changed into a prime (524521537) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 222985 + ... + 225324.

Almost surely, 2^524521530 is an apocalyptic number.

524521530 is an abundant number, since it is smaller than the sum of its proper divisors (944142030).

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

524521530 is a wasteful number, since it uses less digits than its factorization.

524521530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 448335 (or 448332 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 27.

The square root of 524521530 is about 22902.4350233769. The cubic root of 524521530 is about 806.4691763956.

Adding to 524521530 its reverse (35125425), we get a palindrome (559646955).

The spelling of 524521530 in words is "five hundred twenty-four million, five hundred twenty-one thousand, five hundred thirty".