522104240 has 80 divisors (see below), whose sum is σ = 1390202688. Its totient is φ = 178633728.

The previous prime is 522104227. The next prime is 522104257. The reversal of 522104240 is 42401225.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (20).

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 15 ways as a sum of consecutive naturals, for example, 477134 + ... + 478226.

Almost surely, 2^522104240 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 522104240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (695101344).

522104240 is an abundant number, since it is smaller than the sum of its proper divisors (868098448).

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

522104240 is a wasteful number, since it uses less digits than its factorization.

522104240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1966 (or 1960 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 20.

The square root of 522104240 is about 22849.6004341433. The cubic root of 522104240 is about 805.2283806063.

Adding to 522104240 its reverse (42401225), we get a palindrome (564505465).

The spelling of 522104240 in words is "five hundred twenty-two million, one hundred four thousand, two hundred forty".