522225144 has 120 divisors (see below), whose sum is σ = 1701627840. Its totient is φ = 149198112.

The previous prime is 522225139. The next prime is 522225149. The reversal of 522225144 is 441522225.

It is an interprime number because it is at equal distance from previous prime (522225139) and next prime (522225149).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (522225149) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 23529 + ... + 39975.

It is an arithmetic number, because the mean of its divisors is an integer number (14180232).

Almost surely, 2^522225144 is an apocalyptic number.

522225144 is a gapful number since it is divisible by the number (54) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 522225144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (850813920).

522225144 is an abundant number, since it is smaller than the sum of its proper divisors (1179402696).

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

522225144 is a wasteful number, since it uses less digits than its factorization.

522225144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16479 (or 16459 counting only the distinct ones).

The product of its digits is 6400, while the sum is 27.

The square root of 522225144 is about 22852.2459290110. The cubic root of 522225144 is about 805.2905315529.

Adding to 522225144 its reverse (441522225), we get a palindrome (963747369).

The spelling of 522225144 in words is "five hundred twenty-two million, two hundred twenty-five thousand, one hundred forty-four".