521112 has 16 divisors (see below), whose sum is σ = 1302840. Its totient is φ = 173696.

The previous prime is 521107. The next prime is 521119. The reversal of 521112 is 211125.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a zygodrome in base 2.

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 521112.

It is not an unprimeable number, because it can be changed into a prime (521119) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10833 + ... + 10880.

2⁵²¹¹¹² is an apocalyptic number.

It is an amenable number.

521112 is an abundant number, since it is smaller than the sum of its proper divisors (781728).

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

521112 is a wasteful number, since it uses less digits than its factorization.

521112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21722 (or 21718 counting only the distinct ones).

The product of its digits is 20, while the sum is 12.

The square root of 521112 is about 721.8808765995. The cubic root of 521112 is about 80.4717954765.

Adding to 521112 its reverse (211125), we get a palindrome (732237).

The spelling of 521112 in words is "five hundred twenty-one thousand, one hundred twelve".