521312 has 24 divisors (see below), whose sum is σ = 1120392. Its totient is φ = 236800.

The previous prime is 521309. The next prime is 521317. The reversal of 521312 is 213125.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (521317) 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, 389 + ... + 1092.

It is an arithmetic number, because the mean of its divisors is an integer number (46683).

2⁵²¹³¹² is an apocalyptic number.

It is an amenable number.

521312 is an abundant number, since it is smaller than the sum of its proper divisors (599080).

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

521312 is a wasteful number, since it uses less digits than its factorization.

521312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1502 (or 1494 counting only the distinct ones).

The product of its digits is 60, while the sum is 14.

The square root of 521312 is about 722.0193903213. The cubic root of 521312 is about 80.4820890414.

Adding to 521312 its reverse (213125), we get a palindrome (734437).

It can be divided in two parts, 5213 and 12, that added together give a palindrome (5225).

The spelling of 521312 in words is "five hundred twenty-one thousand, three hundred twelve".