523422 has 28 divisors (see below), whose sum is σ = 1180440. Its totient is φ = 173988.

The previous prime is 523417. The next prime is 523427. The reversal of 523422 is 224325.

It is an interprime number because it is at equal distance from previous prime (523417) and next prime (523427).

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 5⁸ + 2⁴ + 4 + 3¹⁰ + 2¹³ + 2¹⁶ .

It is a nialpdrome in base 9.

It is a junction number, because it is equal to n+sod(n) for n = 523395 and 523404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (523427) by changing a digit.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 1279 + ... + 1637.

2⁵²³⁴²² is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 523422, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (590220).

523422 is an abundant number, since it is smaller than the sum of its proper divisors (657018).

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

523422 is an equidigital number, since it uses as much as digits as its factorization.

523422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 379 (or 364 counting only the distinct ones).

The product of its digits is 480, while the sum is 18.

The square root of 523422 is about 723.4790943766. The cubic root of 523422 is about 80.5905260945.

Adding to 523422 its reverse (224325), we get a palindrome (747747).

The spelling of 523422 in words is "five hundred twenty-three thousand, four hundred twenty-two".