522450 has 72 divisors (see below), whose sum is σ = 1489488. Its totient is φ = 136080.

The previous prime is 522449. The next prime is 522469. The reversal of 522450 is 54225.

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

It is a d-powerful number, because it can be written as 5⁴ + 2⁶ + 4³ + 2¹⁷ + 5⁸ + 0 .

It is a zygodrome in base 3.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 12129 + ... + 12171.

2⁵²²⁴⁵⁰ is an apocalyptic number.

522450 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 522450, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (744744).

522450 is an abundant number, since it is smaller than the sum of its proper divisors (967038).

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

522450 is a wasteful number, since it uses less digits than its factorization.

522450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70 (or 53 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 18.

The square root of 522450 is about 722.8070281894. The cubic root of 522450 is about 80.5406093731.

Adding to 522450 its reverse (54225), we get a palindrome (576675).

The spelling of 522450 in words is "five hundred twenty-two thousand, four hundred fifty".