521233 has 4 divisors (see below), whose sum is σ = 533988. Its totient is φ = 508480.

The previous prime is 521231. The next prime is 521243. The reversal of 521233 is 332125.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 258064 + 263169 = 508^2 + 513^2 .

It is a cyclic number.

It is not a de Polignac number, because 521233 - 2¹ = 521231 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (521231) 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, 6316 + ... + 6397.

It is an arithmetic number, because the mean of its divisors is an integer number (133497).

2⁵²¹²³³ is an apocalyptic number.

It is an amenable number.

521233 is a deficient number, since it is larger than the sum of its proper divisors (12755).

521233 is a wasteful number, since it uses less digits than its factorization.

521233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12754.

The product of its digits is 180, while the sum is 16.

The square root of 521233 is about 721.9646805766. The cubic root of 521233 is about 80.4780233979.

Adding to 521233 its reverse (332125), we get a palindrome (853358).

The spelling of 521233 in words is "five hundred twenty-one thousand, two hundred thirty-three".