523612 has 12 divisors (see below), whose sum is σ = 928480. Its totient is φ = 258336.

The previous prime is 523603. The next prime is 523631. The reversal of 523612 is 216325.

It is a happy number.

It is a super-4 number, since 4×523612⁴ (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 self number, because there is not a number n which added to its sum of digits gives 523612.

It is a congruent number.

It is an unprimeable number.

523612 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 513 + ... + 1144.

2⁵²³⁶¹² is an apocalyptic number.

It is an amenable number.

523612 is a deficient number, since it is larger than the sum of its proper divisors (404868).

523612 is a wasteful number, since it uses less digits than its factorization.

523612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1740 (or 1738 counting only the distinct ones).

The product of its digits is 360, while the sum is 19.

The square root of 523612 is about 723.6103924074. The cubic root of 523612 is about 80.6002762563.

Adding to 523612 its reverse (216325), we get a palindrome (739937).

The spelling of 523612 in words is "five hundred twenty-three thousand, six hundred twelve".