523416 has 32 divisors (see below), whose sum is σ = 1326960. Its totient is φ = 172032.

The previous prime is 523403. The next prime is 523417. The reversal of 523416 is 614325.

It is a happy number.

It is a super-4 number, since 4×523416⁴ (a number of 24 digits) contains 4444 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a junction number, because it is equal to n+sod(n) for n = 523392 and 523401.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 523416.

It is not an unprimeable number, because it can be changed into a prime (523417) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2616 + ... + 2808.

2⁵²³⁴¹⁶ is an apocalyptic number.

It is an amenable number.

523416 is an abundant number, since it is smaller than the sum of its proper divisors (803544).

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

523416 is a wasteful number, since it uses less digits than its factorization.

523416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 315 (or 311 counting only the distinct ones).

The product of its digits is 720, while the sum is 21.

The square root of 523416 is about 723.4749477349. The cubic root of 523416 is about 80.5902181562.

Subtracting 523416 from its reverse (614325), we obtain a palindrome (90909).

It can be divided in two parts, 523 and 416, that added together give a palindrome (939).

The spelling of 523416 in words is "five hundred twenty-three thousand, four hundred sixteen".