523524540 has 192 divisors, whose sum is σ = 1867235328. Its totient is φ = 106425600.

The previous prime is 523524517. The next prime is 523524563. The reversal of 523524540 is 45425325.

It is an interprime number because it is at equal distance from previous prime (523524517) and next prime (523524563).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 523524498 and 523524507.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 215935 + ... + 218345.

It is an arithmetic number, because the mean of its divisors is an integer number (9725184).

Almost surely, 2^523524540 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 523524540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (933617664).

523524540 is an abundant number, since it is smaller than the sum of its proper divisors (1343710788).

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

523524540 is a wasteful number, since it uses less digits than its factorization.

523524540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2488 (or 2486 counting only the distinct ones).

The product of its (nonzero) digits is 24000, while the sum is 30.

The square root of 523524540 is about 22880.6586443660. The cubic root of 523524540 is about 805.9578839592.

Adding to 523524540 its reverse (45425325), we get a palindrome (568949865).

The spelling of 523524540 in words is "five hundred twenty-three million, five hundred twenty-four thousand, five hundred forty".