523220 has 12 divisors (see below), whose sum is σ = 1098804. Its totient is φ = 209280.

The previous prime is 523219. The next prime is 523261. The reversal of 523220 is 22325.

It can be written as a sum of positive squares in 2 ways, for example, as 158404 + 364816 = 398^2 + 604^2 .

It is a d-powerful number, because it can be written as 5⁸ + 2⁸ + 2¹⁰ + 3⁵ + 2¹⁷ + 0 .

It is a junction number, because it is equal to n+sod(n) for n = 523195 and 523204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13061 + ... + 13100.

It is an arithmetic number, because the mean of its divisors is an integer number (91567).

2⁵²³²²⁰ is an apocalyptic number.

It is an amenable number.

523220 is an abundant number, since it is smaller than the sum of its proper divisors (575584).

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

523220 is a wasteful number, since it uses less digits than its factorization.

523220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26170 (or 26168 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 14.

The square root of 523220 is about 723.3394777005. The cubic root of 523220 is about 80.5801575449.

Adding to 523220 its reverse (22325), we get a palindrome (545545).

The spelling of 523220 in words is "five hundred twenty-three thousand, two hundred twenty".