524040 has 64 divisors (see below), whose sum is σ = 1719360. Its totient is φ = 126720.

The previous prime is 523997. The next prime is 524047. The reversal of 524040 is 40425.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a nialpdrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (524047) by changing a digit.

524040 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1122 + ... + 1518.

It is an arithmetic number, because the mean of its divisors is an integer number (26865).

2⁵²⁴⁰⁴⁰ 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 524040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (859680).

524040 is an abundant number, since it is smaller than the sum of its proper divisors (1195320).

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

524040 is a wasteful number, since it uses less digits than its factorization.

524040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 422 (or 418 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 15.

The square root of 524040 is about 723.9060712551. The cubic root of 524040 is about 80.6222311410.

Adding to 524040 its reverse (40425), we get a palindrome (564465).

The spelling of 524040 in words is "five hundred twenty-four thousand, forty".