522131040 has 144 divisors (see below), whose sum is σ = 1806543648. Its totient is φ = 137299968.

The previous prime is 522131033. The next prime is 522131041. The reversal of 522131040 is 40131225.

It is a tau number, because it is divible by the number of its divisors (144).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (522131041) 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, 102637 + ... + 107603.

It is an arithmetic number, because the mean of its divisors is an integer number (12545442).

Almost surely, 2^522131040 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 522131040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (903271824).

522131040 is an abundant number, since it is smaller than the sum of its proper divisors (1284412608).

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

522131040 is a wasteful number, since it uses less digits than its factorization.

522131040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5061 (or 5050 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 522131040 is about 22850.1868701330. The cubic root of 522131040 is about 805.2421580284.

Adding to 522131040 its reverse (40131225), we get a palindrome (562262265).

The spelling of 522131040 in words is "five hundred twenty-two million, one hundred thirty-one thousand, forty".